fixes [Chip's delete button tap target is too big](https://github.com/flutter/flutter/issues/129986)

### Description 

This PR fixes the issue where the chip delete button is tappable within the label. 

### 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: Chip(
          label: const Text('Really Long Label'),
          onDeleted: () {},
        ),
      ),
    );
  }
}
``` 
	
</details>

### Before

https://github.com/flutter/flutter/assets/48603081/14b369c5-c740-4dfc-a512-779bd3a1a46b

### After

https://github.com/flutter/flutter/assets/48603081/08c6e232-0237-4ab2-9829-66ee8e5cead2