Repository: flutter
Issue: WebView can't scroll in the TabBarView
Labels: p: webview,package,has reproducible steps,P2,team-framework,triaged-framework,found in release: 3.13,found in release: 3.14

### 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. Put the WebView inside the TabBarView.
2. Drag the horizontal scrollable widget within the WebView. (A widget is a widget implemented by the web.)
3. The widget in TabBarView is dragged, not the widget in the webview.


### Expected results

The horizontal scroll must work where the horizontal scroll exists in webView.
Other areas should be operated by TabBarView horizontal scroll.

### Actual results

The widget in TabBarView is dragged, not the widget in the webview.

### Code sample

<details><summary>Code sample</summary>

```dart
class TabWebView extends StatelessWidget {
  const TabWebView({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return DefaultTabController(
      length: 3,
      child: Scaffold(
        appBar: AppBar(),
        body: Stack(
          alignment: Alignment.bottomCenter,
          children: [
            TabBarView(
              children: [
                InAppWebView(
                  initialUrlRequest: URLRequest(url: Uri.parse("https://flutter.dev/")),
                ),
                InAppWebView(
                  initialUrlRequest: URLRequest(url: Uri.parse("https://www.nintendo.co.jp/")),
                ),
                InAppWebView(
                  initialUrlRequest: URLRequest(url: Uri.parse("https://www.playstation.com/ja-jp/")),
                ),
              ],
            ),
            const SafeArea(child: TabPageSelector()),
          ],
        ),
      ),
    );
  }
}

```

</details>


### Screenshots or Video

<details>
<summary>Screenshots / Video demonstration</summary>

[Upload media here]

</details>

https://github.com/flutter/flutter/assets/51234550/b9a906ea-8b99-4207-b999-b9bc95d08d5f



### Logs

<details><summary>Logs</summary>

```console
[Paste your logs here]
```

</details>


### Flutter Doctor output

<details><summary>Doctor output</summary>

```console
[✓] Flutter (Channel stable, 3.13.0, on macOS 13.4 22F66 darwin-arm64, locale ko-KR)
    • Flutter version 3.13.0 on channel stable at /Users/hanseungjae/flutter-sdk/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision efbf63d9c6 (4 weeks ago), 2023-08-15 21:05:06 -0500
    • Engine revision 1ac611c64e
    • Dart version 3.1.0
    • DevTools version 2.25.0

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
    • Android SDK at /Users/hanseungjae/Library/Android/sdk
    • Platform android-33, build-tools 33.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.3.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14E300c
    • CocoaPods version 1.12.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.3)
    • 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+0-17.0.6b829.9-10027231)

[✓] Connected device (3 available)
    • SM N976N (mobile) • R3CM811X6MP • android-arm64  • Android 12 (API 31)
    • macOS (desktop)   • macos       • darwin-arm64   • macOS 13.4 22F66 darwin-arm64
    • Chrome (web)      • chrome      • web-javascript • Google Chrome 116.0.5845.179

[✓] Network resources
    • All expected network resources are available.
```

</details>