Repository: flutter
Issue: [url_launcher_android] doesn't open intent hyperlinks from in-app webview (without Custom Tabs)
Labels: platform-android,p: url_launcher,package,has reproducible steps,P2,found in release: 3.0,found in release: 3.1,team-android,triaged-android

If you use `url_launcher` on Android to open either a `https` link or `mailto` link everything works find.  
However, if you open an `https` link that will have a button opening a `mailto` link, it fails.

## Steps to Reproduce

### Only on Android

1. Open the website using `url_launcher`, for example `flutter.dev` 
2. Scroll down to `Press` section in the footer and click it (it has `mailto:` hyperlink)

**Expected results:** <!-- what did you want to see? -->
I expect a mailing app to be opened

**Actual results:** <!-- what did you see? -->
An error page with error: `ERR_UNKNOWN_URL_SCHEME`
<img src="https://user-images.githubusercontent.com/16286046/174765466-bda75d92-8180-4bc9-ab1d-dbcd85123cf4.png" width="300"/>

<details>
<summary>Code sample</summary>

<!--
      Please create a minimal reproducible sample that shows the problem
      and attach it below between the lines with the backticks.

      To create it you can use `flutter create bug` command and update the `main.dart` file.

      Alternatively, you can use https://dartpad.dev/
      which is capable of creating and running small Flutter apps.

      Without this we will unlikely be able to progress on the issue, and because of that
      we regretfully will have to close it.
-->
```dart
import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher_string.dart';

void main() {
  runApp(_MyApp());
}

class _MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: ElevatedButton(
            onPressed: () => launchUrlString('https://flutter.dev'),
            child: const Text('Open flutter.dev'),
          ),
        ),
      ),
    );
  }
}
```

</details>

<details>
  <summary>Logs</summary>
<!-- Finally, paste the output of running `flutter doctor -v` here. -->

```
[✓] Flutter (Channel stable, 3.0.2, on macOS 12.4 21F79 darwin-arm, locale en-PL)
    • Flutter version 3.0.2 at /Users/marcinszalek/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision cd41fdd495 (13 days ago), 2022-06-08 09:52:13 -0700
    • Engine revision f15f824b57
    • Dart version 2.17.3
    • DevTools version 2.12.2

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/marcinszalek/Library/Android/sdk
    • Platform android-32, build-tools 31.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.2)
    • 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 11.0.12+0-b1504.28-7817840)

[✓] VS Code (version 1.67.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.40.0

[✓] Connected device (3 available)
    • SM A528B (mobile) • R5CRA1FNLAX • android-arm64  • Android 12 (API 31)
    • macOS (desktop)   • macos       • darwin-arm64   • macOS 12.4 21F79 darwin-arm
    • Chrome (web)      • chrome      • web-javascript • Google Chrome 102.0.5005.115

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

```

</details>


https://user-images.githubusercontent.com/16286046/174765275-097aea16-80e2-4c09-9c55-dce2e02133ee.mp4


<!--
      Consider also attaching screenshots and/or videos to better
      illustrate the issue.

      You can upload them directly on GitHub.
      Beware that video file size is limited to 10MB.
-->