Fix `TimePicker` defaults for `hourMinuteTextStyle` and `dayPeriodTextColor`...

Fix `TimePicker` defaults for `hourMinuteTextStyle` and `dayPeriodTextColor` for Material 3 (#131253)

fixes [`TimePicker` color and visual issues](https://github.com/flutter/flutter/issues/127035)

## Description

- fixes default text style for `TimePicker`s  `hourMinuteTextStyle` and added a todo for https://github.com/flutter/flutter/issues/131247
- fixes correct default color not being accessed for  `dayPeriodTextColor`
-  Updates tests

### Code sample

<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 MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(useMaterial3: true),
      home: const Example(),
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Sample'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            showTimePicker(
              context: context,
              orientation: Orientation.portrait,
              initialEntryMode: TimePickerEntryMode.input,
              initialTime: TimeOfDay.now(),
              builder: (BuildContext context, Widget? child) {
                return MediaQuery(
                  data: MediaQuery.of(context)
                      .copyWith(alwaysUse24HourFormat: true),
                  child: child!,
                );
              },
            );
          },
          child: const Text('Open Time Picker'),
        ),
      ),
    );
  }
}

``` 
	
</details>

### Before

![ezgif com-video-to-gif](https://github.com/flutter/flutter/assets/48603081/b791501f-aed3-44f3-8f75-70a1e28038c6)

### After

![ezgif com-video-to-gif (1)](https://github.com/flutter/flutter/assets/48603081/1bb32064-a9b1-416d-8290-7d22b0d4fdb9)

dev/tools/gen_defaults/generated/used_tokens.csv

@@ -737,6 +737,7 @@ md.comp.time-picker.period-selector.selected.label-text.color,
 md.comp.time-picker.period-selector.selected.pressed.label-text.color,
 md.comp.time-picker.period-selector.unselected.focus.label-text.color,
 md.comp.time-picker.period-selector.unselected.hover.label-text.color,
+md.comp.time-picker.period-selector.unselected.label-text.color,
 md.comp.time-picker.period-selector.unselected.pressed.label-text.color,
 md.comp.time-picker.period-selector.vertical.container.height,
 md.comp.time-picker.period-selector.vertical.container.width,
@@ -746,7 +747,6 @@ md.comp.time-picker.time-selector.container.shape,
 md.comp.time-picker.time-selector.container.width,
 md.comp.time-picker.time-selector.focus.state-layer.opacity,
 md.comp.time-picker.time-selector.hover.state-layer.opacity,
-md.comp.time-picker.time-selector.label-text.text-style,
 md.comp.time-picker.time-selector.selected.container.color,
 md.comp.time-picker.time-selector.selected.focus.label-text.color,
 md.comp.time-picker.time-selector.selected.focus.state-layer.color,

dev/tools/gen_defaults/lib/time_picker_template.dart

@@ -84,44 +84,28 @@ class _${blockName}DefaultsM3 extends _TimePickerDefaults {
   @override
   Color get dayPeriodTextColor {
     return MaterialStateColor.resolveWith((Set<MaterialState> states) {
-      return _dayPeriodForegroundColor.resolve(states);
-    });
-  }
-
-  MaterialStateProperty<Color> get _dayPeriodForegroundColor {
-    return MaterialStateProperty.resolveWith((Set<MaterialState> states) {
-      Color? textColor;
       if (states.contains(MaterialState.selected)) {
-        if (states.contains(MaterialState.pressed)) {
-          textColor = ${componentColor("$dayPeriodComponent.selected.pressed.label-text")};
-        } else {
-          // not pressed
-          if (states.contains(MaterialState.hovered)) {
-            textColor = ${componentColor("$dayPeriodComponent.selected.hover.label-text")};
-          } else {
-            // not hovered
-            if (states.contains(MaterialState.focused)) {
-              textColor = ${componentColor("$dayPeriodComponent.selected.focus.label-text")};
-            }
-          }
+        if (states.contains(MaterialState.focused)) {
+          return ${componentColor("$dayPeriodComponent.selected.focus.label-text")};
+        }
+        if (states.contains(MaterialState.hovered)) {
+          return ${componentColor("$dayPeriodComponent.selected.hover.label-text")};
         }
-      } else {
-        // unselected
         if (states.contains(MaterialState.pressed)) {
-          textColor = ${componentColor("$dayPeriodComponent.unselected.pressed.label-text")};
-        } else {
-          // not pressed
-          if (states.contains(MaterialState.hovered)) {
-            textColor = ${componentColor("$dayPeriodComponent.unselected.hover.label-text")};
-          } else {
-            // not hovered
-            if (states.contains(MaterialState.focused)) {
-              textColor = ${componentColor("$dayPeriodComponent.unselected.focus.label-text")};
-            }
-          }
+          return ${componentColor("$dayPeriodComponent.selected.pressed.label-text")};
         }
+        return ${componentColor("$dayPeriodComponent.selected.label-text")};
+      }
+      if (states.contains(MaterialState.focused)) {
+        return ${componentColor("$dayPeriodComponent.unselected.focus.label-text")};
+      }
+      if (states.contains(MaterialState.hovered)) {
+        return ${componentColor("$dayPeriodComponent.unselected.hover.label-text")};
+      }
+      if (states.contains(MaterialState.pressed)) {
+        return ${componentColor("$dayPeriodComponent.unselected.pressed.label-text")};
       }
-      return textColor ?? ${componentColor("$dayPeriodComponent.selected.label-text")};
+      return ${componentColor("$dayPeriodComponent.unselected.label-text")};
     });
   }
 
@@ -297,7 +281,10 @@ class _${blockName}DefaultsM3 extends _TimePickerDefaults {
   @override
   TextStyle get hourMinuteTextStyle {
     return MaterialStateTextStyle.resolveWith((Set<MaterialState> states) {
-      return ${textStyle('$hourMinuteComponent.label-text')}!.copyWith(color: _hourMinuteTextColor.resolve(states));
+      // TODO(tahatesser): Update this when https://github.com/flutter/flutter/issues/127035 is fixed.
+      // This is using the correct text style from Material 3 spec.
+      // https://m3.material.io/components/time-pickers/specs#fd0b6939-edab-4058-82e1-93d163945215
+      return _textTheme.displayMedium!.copyWith(color: _hourMinuteTextColor.resolve(states));
     });
   }
 

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

@@ -3393,44 +3393,28 @@ class _TimePickerDefaultsM3 extends _TimePickerDefaults {
   @override
   Color get dayPeriodTextColor {
     return MaterialStateColor.resolveWith((Set<MaterialState> states) {
-      return _dayPeriodForegroundColor.resolve(states);
-    });
-  }
-
-  MaterialStateProperty<Color> get _dayPeriodForegroundColor {
-    return MaterialStateProperty.resolveWith((Set<MaterialState> states) {
-      Color? textColor;
       if (states.contains(MaterialState.selected)) {
-        if (states.contains(MaterialState.pressed)) {
-          textColor = _colors.onTertiaryContainer;
-        } else {
-          // not pressed
-          if (states.contains(MaterialState.hovered)) {
-            textColor = _colors.onTertiaryContainer;
-          } else {
-            // not hovered
-            if (states.contains(MaterialState.focused)) {
-              textColor = _colors.onTertiaryContainer;
-            }
-          }
+        if (states.contains(MaterialState.focused)) {
+          return _colors.onTertiaryContainer;
+        }
+        if (states.contains(MaterialState.hovered)) {
+          return _colors.onTertiaryContainer;
         }
-      } else {
-        // unselected
         if (states.contains(MaterialState.pressed)) {
-          textColor = _colors.onSurfaceVariant;
-        } else {
-          // not pressed
-          if (states.contains(MaterialState.hovered)) {
-            textColor = _colors.onSurfaceVariant;
-          } else {
-            // not hovered
-            if (states.contains(MaterialState.focused)) {
-              textColor = _colors.onSurfaceVariant;
-            }
-          }
+          return _colors.onTertiaryContainer;
         }
+        return _colors.onTertiaryContainer;
+      }
+      if (states.contains(MaterialState.focused)) {
+        return _colors.onSurfaceVariant;
+      }
+      if (states.contains(MaterialState.hovered)) {
+        return _colors.onSurfaceVariant;
+      }
+      if (states.contains(MaterialState.pressed)) {
+        return _colors.onSurfaceVariant;
       }
-      return textColor ?? _colors.onTertiaryContainer;
+      return _colors.onSurfaceVariant;
     });
   }
 
@@ -3606,7 +3590,10 @@ class _TimePickerDefaultsM3 extends _TimePickerDefaults {
   @override
   TextStyle get hourMinuteTextStyle {
     return MaterialStateTextStyle.resolveWith((Set<MaterialState> states) {
-      return _textTheme.displayLarge!.copyWith(color: _hourMinuteTextColor.resolve(states));
+      // TODO(tahatesser): Update this when https://github.com/flutter/flutter/issues/127035 is fixed.
+      // This is using the correct text style from Material 3 spec.
+      // https://m3.material.io/components/time-pickers/specs#fd0b6939-edab-4058-82e1-93d163945215
+      return _textTheme.displayMedium!.copyWith(color: _hourMinuteTextColor.resolve(states));
     });
   }
 

packages/flutter/test/material/time_picker_theme_test.dart

@@ -249,8 +249,8 @@ void main() {
     final RenderParagraph hourText = _textRenderParagraph(tester, '7');
     expect(
       hourText.text.style,
-      Typography.material2021().englishLike.displayLarge!
-        .merge(Typography.material2021().black.displayLarge)
+      Typography.material2021().englishLike.displayMedium!
+        .merge(Typography.material2021().black.displayMedium)
         .copyWith(
           color: defaultTheme.colorScheme.onPrimaryContainer,
           decorationColor: defaultTheme.colorScheme.onSurface
@@ -260,8 +260,8 @@ void main() {
     final RenderParagraph minuteText = _textRenderParagraph(tester, '15');
     expect(
       minuteText.text.style,
-      Typography.material2021().englishLike.displayLarge!
-        .merge(Typography.material2021().black.displayLarge)
+      Typography.material2021().englishLike.displayMedium!
+        .merge(Typography.material2021().black.displayMedium)
         .copyWith(
           color: defaultTheme.colorScheme.onSurface,
           decorationColor: defaultTheme.colorScheme.onSurface
@@ -275,7 +275,7 @@ void main() {
         .merge(Typography.material2021().black.titleMedium)
         .copyWith(
           color: defaultTheme.colorScheme.onTertiaryContainer,
-          decorationColor: defaultTheme.colorScheme.onSurface
+          decorationColor: defaultTheme.colorScheme.onSurface,
         ),
     );
 
@@ -285,8 +285,8 @@ void main() {
       Typography.material2021().englishLike.titleMedium!
         .merge(Typography.material2021().black.titleMedium)
         .copyWith(
-          color: defaultTheme.colorScheme.onTertiaryContainer,
-          decorationColor: defaultTheme.colorScheme.onSurface
+          color: defaultTheme.colorScheme.onSurfaceVariant,
+          decorationColor: defaultTheme.colorScheme.onSurface,
         )
     );
 
@@ -297,7 +297,7 @@ void main() {
         .merge(Typography.material2021().black.bodyMedium)
         .copyWith(
           color: defaultTheme.colorScheme.onSurface,
-          decorationColor: defaultTheme.colorScheme.onSurface
+          decorationColor: defaultTheme.colorScheme.onSurface,
         ),
     );
 
@@ -312,7 +312,7 @@ void main() {
         .merge(Typography.material2021().black.bodyLarge)
         .copyWith(
           color: defaultTheme.colorScheme.onSurface,
-          decorationColor: defaultTheme.colorScheme.onSurface
+          decorationColor: defaultTheme.colorScheme.onSurface,
         ),
     );
     // ignore: avoid_dynamic_calls