Repository: flutter
Issue: MouseRegion fires on onEnter/onExit when widget tapped [iOS/iPad]
Labels: platform-ios,framework,a: mouse,has reproducible steps,P3,team-ios,triaged-ios,found in release: 3.13,found in release: 3.16

### Is there an existing issue for this?

- [X] I have searched the [existing issues](https://github.com/flutter/flutter/issues)
- [X] I have read the [guide to filing a bug](https://flutter.dev/docs/resources/bug-reports)

### Steps to reproduce

1. Run example code on iPad Simulator.
2. Click `Capture Pointer` button in simulator menu bar.
3. Move mouse.
4. Tap anywhere inside the main body.

### Expected results

`onEnter` fires once.

### Actual results

`onEnter` fires when mouse enters main body, then `onEnter` fires again, followed immediately by `onExit` when main body tapped.

### Code sample

<details><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';

void main() {
  runApp(const HelloWorld());
}

class HelloWorld extends StatelessWidget {
  const HelloWorld({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
            appBar: AppBar(
              title: const Text('HelloWorld'),
            ),
            body: MouseRegion(
                onEnter: (_) {
                  print('ENTER');
                },
                onExit: (_) {
                  print('> EXIT');
                },
                child: const SizedBox(
                  child: Center(
                    child: Text('Hello, World!'),
                  ),
                ))));
  }
}
```

</details>


### Screenshots or Video

<details>
<summary>Screenshots / Video demonstration</summary>

[Upload media here]

</details>


### Logs

<details><summary>Logs</summary>

```console
[Paste your logs here]
```

</details>


### Flutter Doctor output

<details><summary>Doctor output</summary>

```console
flutter doctor -v
[✓] Flutter (Channel stable, 3.13.9, on macOS 12.7 21G816 darwin-x64, locale en-CA)
    • Flutter version 3.13.9 on channel stable at /usr/local/Caskroom/flutter/3.13.5/flutter
    • Upstream repository ssh://git@github.com/flutter/flutter.git
    • FLUTTER_GIT_URL = ssh://git@github.com/flutter/flutter.git
    • Framework revision d211f42860 (3 days ago), 2023-10-25 13:42:25 -0700
    • Engine revision 0545f8705d
    • Dart version 3.1.5
    • DevTools version 2.25.0

[✓] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
    • Android SDK at /Users/evan/Library/Android/sdk
    • Platform android-33, build-tools 32.1.0-rc1
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14C18
    • CocoaPods version 1.11.3

[✓] Android Studio (version 2022.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)

[✓] VS Code (version 1.83.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.74.0

[✓] Connected device (2 available)
    • iPad Pro (12.9-inch) (6th generation) (mobile) • 71C8FCFC-8121-4E0B-8CF0-DC77922B72AB • ios
      • com.apple.CoreSimulator.SimRuntime.iOS-16-2 (simulator)
    • macOS (desktop)                                • macos                                •
      darwin-x64 • macOS 12.7 21G816 darwin-x64

[✓] Network resources
    • All expected network resources are available.

• No issues found!
```

</details>