Fix `DatePickerDialog` & `DateRangePickerDialog` overflow when resized from...

Fix  `DatePickerDialog` & `DateRangePickerDialog` overflow when resized from landscape to portrait (#133327)

fixes [resize window with a `showDateRangePicker` will make RenderFlex overflowed error](https://github.com/flutter/flutter/issues/131989)

### Description
- This fixes  `DatePickerDialog` & `DateRangePickerDialog` overflow error when resized from landscape to portrait.
- Added tests that check these two widgets from landscape to portrait for no overflow errors.

<details
<summary>expand to view the code sample</summary> 

```dart
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Example(),
    );
  }
}

class Example extends StatefulWidget {
  const Example({super.key});

  @override
  State<Example> createState() => _ExampleState();
}

class _ExampleState extends State<Example> {
  bool _portait = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('DatePicker & DateRangePicker'),
      ),
      body: MediaQuery(
        data: MediaQuery.of(context).copyWith(
          size: _portait ? const Size(400, 800) : const Size(800, 400),
        ),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
          children: [
            DatePickerDialog(
              initialDate: DateTime.now(),
              firstDate: DateTime(2020),
              lastDate: DateTime(2030),
              initialEntryMode: DatePickerEntryMode.inputOnly,
            ),
            DateRangePickerDialog(
              currentDate: DateTime.now(),
              firstDate: DateTime(2020),
              lastDate: DateTime(2030),
              initialEntryMode: DatePickerEntryMode.inputOnly,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          setState(() {
            _portait = !_portait;
          });
        },
        child: const Icon(Icons.refresh),
      ),
    );
  }
}

```

</details>

### Before

https://github.com/flutter/flutter/assets/48603081/81387cbb-cdcf-42bd-b4f8-b7a08317c955

### After

https://github.com/flutter/flutter/assets/48603081/36d28ea9-cfed-48ad-90f5-0459755e08c0

packages/flutter/lib/src/material/date_picker.dart

@@ -674,7 +674,12 @@ class _DatePickerDialogState extends State<DatePickerDialog> with RestorationMix
           // Constrain the textScaleFactor to the largest supported value to prevent
           // layout issues.
           maxScaleFactor: _kMaxTextScaleFactor,
-          child: Builder(builder: (BuildContext context) {
+          child: LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) {
+            final Size portraitDialogSize = useMaterial3 ? _inputPortraitDialogSizeM3 : _inputPortraitDialogSizeM2;
+            // Make sure the portrait dialog can fit the contents comfortably when
+            // resized from the landscape dialog.
+            final bool isFullyPortrait = constraints.maxHeight >= portraitDialogSize.height;
+
             switch (orientation) {
               case Orientation.portrait:
                 return Column(
@@ -683,8 +688,10 @@ class _DatePickerDialogState extends State<DatePickerDialog> with RestorationMix
                   children: <Widget>[
                     header,
                     if (useMaterial3) Divider(height: 0, color: datePickerTheme.dividerColor),
-                    Expanded(child: picker),
-                    actions,
+                    if (isFullyPortrait) ...<Widget>[
+                      Expanded(child: picker),
+                      actions,
+                    ],
                   ],
                 );
               case Orientation.landscape:
@@ -2775,14 +2782,25 @@ class _InputDateRangePickerDialog extends StatelessWidget {
 
     switch (orientation) {
       case Orientation.portrait:
-        return Column(
-          mainAxisSize: MainAxisSize.min,
-          crossAxisAlignment: CrossAxisAlignment.stretch,
-          children: <Widget>[
-            header,
-            Expanded(child: picker),
-            actions,
-          ],
+        return LayoutBuilder(
+          builder: (BuildContext context, BoxConstraints constraints) {
+            final Size portraitDialogSize = useMaterial3 ? _inputPortraitDialogSizeM3 : _inputPortraitDialogSizeM2;
+            // Make sure the portrait dialog can fit the contents comfortably when
+            // resized from the landscape dialog.
+            final bool isFullyPortrait = constraints.maxHeight >= portraitDialogSize.height;
+
+            return Column(
+              mainAxisSize: MainAxisSize.min,
+              crossAxisAlignment: CrossAxisAlignment.stretch,
+              children: <Widget>[
+                header,
+                if (isFullyPortrait) ...<Widget>[
+                  Expanded(child: picker),
+                  actions,
+                ],
+              ],
+            );
+          }
         );
 
       case Orientation.landscape:

packages/flutter/test/material/date_picker_test.dart

@@ -1469,6 +1469,22 @@ void main() {
         expect(tester.takeException(), null);
       });
     });
+
+    // This is a regression test for https://github.com/flutter/flutter/issues/131989.
+    testWidgets('Dialog contents do not overflow when resized from landscape to portrait',
+      (WidgetTester tester) async {
+        addTearDown(tester.view.reset);
+        // Initial window size is wide for landscape mode.
+        tester.view.physicalSize = wideWindowSize;
+        tester.view.devicePixelRatio = 1.0;
+
+        await prepareDatePicker(tester, (Future<DateTime?> date) async {
+          // Change window size to narrow for portrait mode.
+          tester.view.physicalSize = narrowWindowSize;
+          await tester.pump();
+          expect(tester.takeException(), null);
+        });
+    });
   });
 
   group('Semantics', () {

packages/flutter/test/material/date_range_picker_test.dart

@@ -53,6 +53,9 @@ void main() {
     saveText = null;
   });
 
+  const Size wideWindowSize = Size(1920.0, 1080.0);
+  const Size narrowWindowSize = Size(1070.0, 1770.0);
+
   Future<void> preparePicker(
     WidgetTester tester,
     Future<void> Function(Future<DateTimeRange?> date) callback, {
@@ -1065,6 +1068,22 @@ void main() {
       // Test the end date text field
       testInputDecorator(tester.widget(borderContainers.last), border, Colors.transparent);
     });
+
+    // This is a regression test for https://github.com/flutter/flutter/issues/131989.
+    testWidgets('Dialog contents do not overflow when resized from landscape to portrait',
+      (WidgetTester tester) async {
+        addTearDown(tester.view.reset);
+        // Initial window size is wide for landscape mode.
+        tester.view.physicalSize = wideWindowSize;
+        tester.view.devicePixelRatio = 1.0;
+
+        await preparePicker(tester, (Future<DateTimeRange?> range) async {
+          // Change window size to narrow for portrait mode.
+          tester.view.physicalSize = narrowWindowSize;
+          await tester.pump();
+          expect(tester.takeException(), null);
+      });
+    });
   });
 
   testWidgets('DatePickerDialog is state restorable', (WidgetTester tester) async {