🎨: fix cupertionActionSheet design (#134345)

## Overview
Fixed the implementation of CupertionActionSheet based on [Apple Design Resource](https://www.figma.com/community/file/1248375255495415511).
I also deleted devicePixelRatio because Flutter uses logical pixels based on https://api.flutter.dev/flutter/dart-ui/FlutterView/devicePixelRatio.html.

ISSUE: #134539 

UPDATED GOLDEN: https://flutter-gold.skia.org/search?issue=134345&crs=github&patchsets=3&corpus=flutter

### Before
<img src="https://github.com/flutter/flutter/assets/40790076/8492fe5f-582f-4623-86eb-c60cb88d81a1" width=300>

### After
<img src="https://github.com/flutter/flutter/assets/40790076/fcdd7f7e-6ab5-4b68-a7b0-27a6fc2975b8" width=300>

packages/flutter/lib/src/cupertino/dialog.dart

@@ -54,7 +54,7 @@ const TextStyle _kCupertinoDialogActionStyle = TextStyle(
 const TextStyle _kActionSheetActionStyle = TextStyle(
   fontFamily: 'CupertinoSystemText',
   inherit: false,
-  fontSize: 20.0,
+  fontSize: 17.0,
   fontWeight: FontWeight.w400,
   textBaseline: TextBaseline.alphabetic,
 );
@@ -71,7 +71,7 @@ const TextStyle _kActionSheetContentStyle = TextStyle(
 // Generic constants shared between Dialog and ActionSheet.
 const double _kBlurAmount = 20.0;
 const double _kCornerRadius = 14.0;
-const double _kDividerThickness = 1.0;
+const double _kDividerThickness = 0.3;
 
 // Dialog specific constants.
 // iOS dialogs have a normal display width and another display width that is
@@ -87,8 +87,8 @@ const double _kDialogMinButtonFontSize = 10.0;
 const double _kActionSheetEdgeHorizontalPadding = 8.0;
 const double _kActionSheetCancelButtonPadding = 8.0;
 const double _kActionSheetEdgeVerticalPadding = 10.0;
-const double _kActionSheetContentHorizontalPadding = 40.0;
-const double _kActionSheetContentVerticalPadding = 14.0;
+const double _kActionSheetContentHorizontalPadding = 16.0;
+const double _kActionSheetContentVerticalPadding = 12.0;
 const double _kActionSheetButtonHeight = 56.0;
 
 // A translucent color that is painted on top of the blurred backdrop as the
@@ -559,16 +559,16 @@ class _CupertinoActionSheetState extends State<CupertinoActionSheet> {
         title: widget.title,
         message: widget.message,
         scrollController: _effectiveMessageScrollController,
-        titlePadding: const EdgeInsets.only(
+        titlePadding: EdgeInsets.only(
           left: _kActionSheetContentHorizontalPadding,
           right: _kActionSheetContentHorizontalPadding,
-          bottom: _kActionSheetContentVerticalPadding,
+          bottom: widget.message == null ? _kActionSheetContentVerticalPadding : 0.0,
           top: _kActionSheetContentVerticalPadding,
         ),
         messagePadding: EdgeInsets.only(
           left: _kActionSheetContentHorizontalPadding,
           right: _kActionSheetContentHorizontalPadding,
-          bottom: widget.title == null ? _kActionSheetContentVerticalPadding : 22.0,
+          bottom: _kActionSheetContentVerticalPadding,
           top: widget.title == null ? _kActionSheetContentVerticalPadding : 0.0,
         ),
         titleTextStyle: widget.message == null
@@ -577,7 +577,7 @@ class _CupertinoActionSheetState extends State<CupertinoActionSheet> {
         messageTextStyle: widget.title == null
             ? _kActionSheetContentStyle.copyWith(fontWeight: FontWeight.w600)
             : _kActionSheetContentStyle,
-        additionalPaddingBetweenTitleAndMessage: const EdgeInsets.only(top: 8.0),
+        additionalPaddingBetweenTitleAndMessage: const EdgeInsets.only(top: 4.0),
       );
       content.add(Flexible(child: titleSection));
     }
@@ -819,7 +819,7 @@ class _CupertinoDialogRenderWidget extends RenderObjectWidget {
   @override
   RenderObject createRenderObject(BuildContext context) {
     return _RenderCupertinoDialog(
-      dividerThickness: _kDividerThickness / MediaQuery.devicePixelRatioOf(context),
+      dividerThickness: _kDividerThickness,
       isInAccessibilityMode: _isInAccessibilityMode(context) && !isActionSheet,
       dividerColor: CupertinoDynamicColor.resolve(dividerColor, context),
       isActionSheet: isActionSheet,
@@ -1483,7 +1483,6 @@ class _CupertinoAlertActionSection extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final double devicePixelRatio = MediaQuery.devicePixelRatioOf(context);
 
     final List<Widget> interactiveButtons = <Widget>[];
     for (int i = 0; i < children.length; i += 1) {
@@ -1500,7 +1499,7 @@ class _CupertinoAlertActionSection extends StatelessWidget {
         controller: scrollController,
         child: _CupertinoDialogActionsRenderWidget(
           actionButtons: interactiveButtons,
-          dividerThickness: _kDividerThickness / devicePixelRatio,
+          dividerThickness: _kDividerThickness,
           hasCancelButton: hasCancelButton,
           isActionSheet: isActionSheet,
         ),

packages/flutter/test/cupertino/action_sheet_test.dart

@@ -347,11 +347,11 @@ void main() {
     expect(tester.getCenter(find.widgetWithText(CupertinoActionSheetAction, 'Five')).dx, equals(400.0));
 
     // Check that the action buttons are the correct heights.
-    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'One')).height, equals(92.0));
-    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Two')).height, equals(92.0));
-    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Three')).height, equals(92.0));
-    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Four')).height, equals(92.0));
-    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Five')).height, equals(92.0));
+    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'One')).height, equals(83.0));
+    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Two')).height, equals(83.0));
+    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Three')).height, equals(83.0));
+    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Four')).height, equals(83.0));
+    expect(tester.getSize(find.widgetWithText(CupertinoActionSheetAction, 'Five')).height, equals(83.0));
   });
 
   testWidgetsWithLeakTracking('Content section is scrollable', (WidgetTester tester) async {
@@ -517,7 +517,7 @@ void main() {
     await tester.tap(find.text('Go'));
     await tester.pump();
 
-    expect(tester.getSize(find.byType(CupertinoActionSheet)).height, moreOrLessEquals(132.33333333333334));
+    expect(tester.getSize(find.byType(CupertinoActionSheet)).height, moreOrLessEquals(132.3));
   });
 
   testWidgetsWithLeakTracking('1 action button with cancel button', (WidgetTester tester) async {
@@ -574,7 +574,7 @@ void main() {
     await tester.tap(find.text('Go'));
     await tester.pump();
 
-    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(112.33333333333331));
+    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(112.3));
   });
 
   testWidgetsWithLeakTracking('3 action buttons with cancel button', (WidgetTester tester) async {
@@ -608,7 +608,7 @@ void main() {
     await tester.tap(find.text('Go'));
     await tester.pump();
 
-    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(168.66666666666669));
+    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(168.6));
   });
 
   testWidgetsWithLeakTracking('4+ action buttons with cancel button', (WidgetTester tester) async {
@@ -646,7 +646,7 @@ void main() {
     await tester.tap(find.text('Go'));
     await tester.pump();
 
-    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(84.33333333333337));
+    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(84.3));
   });
 
   testWidgetsWithLeakTracking('1 action button without cancel button', (WidgetTester tester) async {
@@ -694,7 +694,7 @@ void main() {
     await tester.tap(find.text('Go'));
     await tester.pump();
 
-    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(84.33333333333337));
+    expect(findScrollableActionsSectionRenderBox(tester).size.height, moreOrLessEquals(84.3));
   });
 
   testWidgetsWithLeakTracking('Action sheet with just cancel button is correct', (WidgetTester tester) async {
@@ -784,7 +784,7 @@ void main() {
     expect(tester.getBottomLeft(find.widgetWithText(CupertinoActionSheetAction, 'Cancel')).dy, 590.0);
     expect(
       tester.getBottomLeft(find.widgetWithText(CupertinoActionSheetAction, 'One')).dy,
-      moreOrLessEquals(469.66666666666663),
+      moreOrLessEquals(469.7),
     );
     expect(tester.getBottomLeft(find.widgetWithText(CupertinoActionSheetAction, 'Two')).dy, 526.0);
   });
@@ -820,46 +820,46 @@ void main() {
     expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, 600.0);
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(470.0, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(483.9, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(374.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(398.6, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(337.1, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(365.3, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(325.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(354.8, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(320.8, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(350.7, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(319.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(349.4, epsilon: 0.1));
 
     // Action sheet has reached final height
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(319.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(349.4, epsilon: 0.1));
 
     // Exit animation
     await tester.tapAt(const Offset(20.0, 20.0));
     await tester.pump();
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(319.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(349.4, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(449.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(465.5, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(544.9, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(550.8, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(582.1, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(584.1, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(593.9, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(594.6, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(598.5, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(598.7, epsilon: 0.1));
 
     // Action sheet has disappeared
     await tester.pump(const Duration(milliseconds: 60));
@@ -897,23 +897,23 @@ void main() {
     expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, 600.0);
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(470.0, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(483.92863239836686, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(374.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(398.5571539306641, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(337.1, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(365.3034101784229, epsilon: 0.1));
 
     // Exit animation
     await tester.tapAt(const Offset(20.0, 20.0));
     await tester.pump(const Duration(milliseconds: 60));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(374.3, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(398.5571539306641, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
-    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(470.0, epsilon: 0.1));
+    expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, moreOrLessEquals(483.92863239836686, epsilon: 0.1));
 
     await tester.pump(const Duration(milliseconds: 60));
     expect(tester.getTopLeft(find.byType(CupertinoActionSheet)).dy, 600.0);

packages/flutter/test/cupertino/dialog_test.dart

@@ -594,7 +594,7 @@ void main() {
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
-          dividerWidth = 1.0 / MediaQuery.devicePixelRatioOf(context);
+          dividerWidth = 0.3;
           return CupertinoAlertDialog(
             title: const Text('The Title'),
             content: const Text('The message'),
@@ -636,11 +636,10 @@ void main() {
   testWidgetsWithLeakTracking('Actions section height for 2 stacked buttons with enough room is height of both buttons.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
     addTearDown(scrollController.dispose);
-    late double dividerThickness; // Will be set when the dialog builder runs. Needs a BuildContext.
+    const double dividerThickness = 0.3;
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
-          dividerThickness = 1.0 / MediaQuery.devicePixelRatioOf(context);
           return CupertinoAlertDialog(
             title: const Text('The Title'),
             content: const Text('The message'),
@@ -707,7 +706,7 @@ void main() {
 
     expect(
       actionsSectionBox.size.height,
-      67.83333333333337,
+      67.80000000000001,
     );
   });
 
@@ -789,8 +788,8 @@ void main() {
     expect(option1ButtonBox.size.width, option2ButtonBox.size.width);
     expect(option1ButtonBox.size.width, actionsSectionBox.size.width);
 
-    // Expected Height = button 1 + divider + 1/2 button 2 = 67.83333333333334
-    const double expectedHeight = 67.83333333333334;
+    // Expected Height = button 1 + divider + 1/2 button 2 = 67.80000000000001
+    const double expectedHeight = 67.80000000000001;
     expect(
       actionsSectionBox.size.height,
       moreOrLessEquals(expectedHeight),
@@ -849,11 +848,10 @@ void main() {
   testWidgetsWithLeakTracking('Pressed button changes appearance and dividers disappear.', (WidgetTester tester) async {
     final ScrollController scrollController = ScrollController();
     addTearDown(scrollController.dispose);
-    late double dividerThickness; // Will be set when the dialog builder runs. Needs a BuildContext.
+    const double dividerThickness = 0.3;
     await tester.pumpWidget(
       createAppWithButtonThatLaunchesDialog(
         dialogBuilder: (BuildContext context) {
-          dividerThickness = 1.0 / MediaQuery.devicePixelRatioOf(context);
           return CupertinoAlertDialog(
             title: const Text('The Title'),
             content: const Text('The message'),
@@ -893,10 +891,10 @@ void main() {
     );
     final Offset bottomDividerCenter = Offset(
       secondButtonBox.size.width / 2.0,
-      firstButtonBox.size.height
-        + dividerThickness
-        + secondButtonBox.size.height
-        + (0.5 * dividerThickness),
+      firstButtonBox.size.height +
+          dividerThickness +
+          secondButtonBox.size.height +
+          (0.5 * dividerThickness),
     );
 
     // Before pressing the button, verify following expectations: