fixes [Update `CheckedPopupMenuItem‎` for Material 3](https://github.com/flutter/flutter/issues/128576)

### Description

- This adds the missing ``CheckedPopupMenuItem‎.labelTextStyle` parameter
- Fixes default text style for `CheckedPopupMenuItem‎`. 
It used `ListTile`'s  `bodyLarge` instead of `LabelLarge` similar to `PopupMenuItem`.

### 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,
        textTheme: const TextTheme(
          labelLarge: TextStyle(
            fontWeight: FontWeight.bold,
            fontStyle: FontStyle.italic,
            letterSpacing: 5.0,
          ),
        ),
      ),
      home: const Example(),
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Sample'),
        actions: <Widget>[
          PopupMenuButton<String>(
            icon: const Icon(Icons.more_vert),
            itemBuilder: (BuildContext context) => <PopupMenuEntry<String>>[
              const CheckedPopupMenuItem<String>(
                // labelTextStyle: MaterialStateProperty.resolveWith(
                //     (Set<MaterialState> states) {
                //   if (states.contains(MaterialState.selected)) {
                //     return const TextStyle(
                //       color: Colors.red,
                //       fontStyle: FontStyle.italic,
                //       fontWeight: FontWeight.bold,
                //     );
                //   }

                //   return const TextStyle(
                //     color: Colors.amber,
                //     fontStyle: FontStyle.italic,
                //     fontWeight: FontWeight.bold,
                //   );
                // }),
                child: Text('Mild'),
              ),
              const CheckedPopupMenuItem<String>(
                checked: true,
                // labelTextStyle: MaterialStateProperty.resolveWith(
                //     (Set<MaterialState> states) {
                //   if (states.contains(MaterialState.selected)) {
                //     return const TextStyle(
                //       color: Colors.red,
                //       fontStyle: FontStyle.italic,
                //       fontWeight: FontWeight.bold,
                //     );
                //   }

                //   return const TextStyle(
                //     color: Colors.amber,
                //     fontStyle: FontStyle.italic,
                //     fontWeight: FontWeight.bold,
                //   );
                // }),
                child: Text('Spicy'),
              ),
              const PopupMenuDivider(),
              const PopupMenuItem<String>(
                value: 'Close',
                child: Text('Close'),
              ),
            ],
          )
        ],
      ),
    );
  }
}

``` 
	
</details>

### Customized `textTheme.labelLarge` text theme.
| Before | After |
| --------------- | --------------- |
| <img src="https://github.com/flutter/flutter/assets/48603081/2672438d-b2da-479b-a5d3-d239ef646365" /> | <img src="https://github.com/flutter/flutter/assets/48603081/b9f83719-dede-4c2f-8247-18f74e63eb29"  /> |

### New `CheckedPopupMenuItem‎.labelTextStyle` parameter with material states support
<img src="https://github.com/flutter/flutter/assets/48603081/ef0a88aa-9811-42b1-a3aa-53b90c8d43fb" height="450" />