Repository: flutter
Issue: Browser warning when focus is given to text field in autofill group
Labels: a: text input,framework,platform-web,has reproducible steps,P2,team-web,triaged-web,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 the code sample in Chrome
2. Focus the first text field
3. A warning is logged to the browser console (see the screenshot)

### Expected results

No logs are printed.

### Actual results

I see a warning about a DOM element being printed.

### Code sample

<details><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  TextEditingController username = TextEditingController();
  TextEditingController newPassword = TextEditingController();
  TextEditingController repeatNewPassword = TextEditingController();
  TextEditingController password = TextEditingController();

  bool isNewUser = true;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      floatingActionButton: FloatingActionButton(onPressed: () => TextInput.finishAutofillContext()),
      body: AutofillGroup(
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            const Text('Username'),
            TextField(controller: username, autofillHints: const [AutofillHints.username]),
            if (isNewUser) ...[
              const Text('Password'),
              TextField(obscureText: true, controller: newPassword, autofillHints: const [AutofillHints.newPassword]),
            ],
            if (isNewUser) ...[
              const Text('repeat password'),
              TextField(controller: repeatNewPassword, autofillHints: const [AutofillHints.newPassword]),
            ],
            if (!isNewUser) TextField(controller: password, autofillHints: const [AutofillHints.password]),
          ],
        ),
      ),
    );
  }
}
```

</details>


### Screenshots or Video

<details>
<summary>Screenshots / Video demonstration</summary>

![Screenshot 2023-10-25 at 16 58 42](https://github.com/flutter/flutter/assets/23480364/62d674a1-ea3e-4559-822b-e3d3ac007355)


</details>


### Logs

<details><summary>Logs</summary>

Sadly I cannot seem to copy the log from the console.

</details>


### Flutter Doctor output

<details><summary>Doctor output</summary>

```console
[✓] Flutter (Channel stable, 3.13.8, on macOS 14.0 23A344 darwin-x64, locale
    en-BE)
    • Flutter version 3.13.8 on channel stable at
      /Users/navaronbracke/Documents/flutter
    • Upstream repository git@github.com:navaronbracke/flutter.git
    • FLUTTER_GIT_URL = git@github.com:navaronbracke/flutter.git
    • Framework revision 6c4930c4ac (7 days ago), 2023-10-18 10:57:55 -0500
    • Engine revision 767d8c75e8
    • Dart version 3.1.4
    • DevTools version 2.25.0

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
    • Android SDK at /Users/navaronbracke/Library/Android/sdk
    • Platform android-34, build-tools 34.0.0
    • ANDROID_HOME = /Users/navaronbracke/Library/Android/sdk
    • 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 15.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15A507
    • CocoaPods version 1.13.0

[✓] 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)

[✓] VS Code (version 1.83.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.74.0

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-x64     • macOS 14.0 23A344 darwin-x64
    • Chrome (web)    • chrome • web-javascript • Google Chrome 118.0.5993.88

[✓] Network resources
    • All expected network resources are available.

• No issues found!
```

</details>