Repository: flutter
Issue: RawAutocomplete options don't relayout if the field layout algorithm changes the field's width
Labels: framework,has reproducible steps,P2,team-framework,triaged-framework,found in release: 3.27,found in release: 3.28

### Steps to reproduce

1. Wrap a `RawAutocomplete` in an `Align` with `alignment: .centerLeft`.
2. Wrap the field in `RawAutocomplete.fieldViewBuilder` in an `AnimatedBuilder` to animate the field width.

### Expected results

The options width should always match the field width, and so should grow/shrink in sync with the field.

### Actual results

The options width doesn't grow/shrink while the field width animates.

### Code sample

<details><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';

/// Flutter code sample for [Autocomplete].

void main() => runApp(const AutocompleteExampleApp());

class AutocompleteExampleApp extends StatelessWidget {
  const AutocompleteExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Autocomplete Basic'),
        ),
        body: CustomScrollView(
          slivers: [
            const SliverToBoxAdapter(child: SizedBox(height: 1000)),
            SliverToBoxAdapter(
              child: Center(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    Text(
                        'Type below to autocomplete the following possible results: ${AutocompleteBasicExample._kOptions}.'),
                    const Padding(
                      padding: EdgeInsets.symmetric(horizontal: 32.0),
                      child: AutocompleteBasicExample(),
                    ),
                  ],
                ),
              ),
            ),
            const SliverToBoxAdapter(child: SizedBox(height: 1000)),
          ],
        ),
      ),
    );
  }
}

class AutocompleteBasicExample extends StatefulWidget {
  const AutocompleteBasicExample({super.key});

  static const List<String> _kOptions = <String>[
    'aardvark',
    'bobcat',
    'chameleon',
  ];

  @override
  State<AutocompleteBasicExample> createState() =>
      _AutocompleteBasicExampleState();
}

class _AutocompleteBasicExampleState extends State<AutocompleteBasicExample>
    with TickerProviderStateMixin {
  late final AnimationController _controller = AnimationController(
    duration: const Duration(seconds: 10),
    vsync: this,
  )..repeat();

  TextEditingController textEditingController = TextEditingController();
  final FocusNode focusNode = FocusNode();

  bool disposedController = false;

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Align(
      alignment: Alignment.centerLeft,
      child: RawAutocomplete<String>(
        focusNode: focusNode,
        textEditingController: textEditingController,
        fieldViewBuilder: (BuildContext buildContext,
            TextEditingController controller,
            FocusNode focusNode,
            VoidCallback onSubmitted) {
          return AnimatedBuilder(
            animation: _controller,
            child: TextField(
              controller: controller,
              focusNode: focusNode,
              onSubmitted: (String value) => onSubmitted(),
            ),
            builder: (BuildContext context, Widget? child) {
              return SizedBox(
                width: 500 * _controller.value,
                child: child,
              );
            },
          );
        },
        optionsViewBuilder: (BuildContext context,
            AutocompleteOnSelected<String> onSelected,
            Iterable<String> options) {
          return Align(
            alignment: Alignment.topLeft,
            child: Material(
              elevation: 4.0,
              child: SizedBox(
                height: 200.0,
                child: ListView.builder(
                  padding: const EdgeInsets.all(8.0),
                  itemCount: options.length,
                  itemBuilder: (BuildContext context, int index) {
                    final String option = options.elementAt(index);
                    return GestureDetector(
                      onTap: () {
                        onSelected(option);
                      },
                      child: ListTile(
                        title: Text(option),
                      ),
                    );
                  },
                ),
              ),
            ),
          );
        },
        optionsBuilder: (TextEditingValue textEditingValue) {
          if (textEditingValue.text == '') {
            return const Iterable<String>.empty();
          }
          return AutocompleteBasicExample._kOptions.where((String option) {
            return option.contains(textEditingValue.text.toLowerCase());
          });
        },
        onSelected: (String selection) {
          debugPrint('You just selected $selection');
        },
      ),
    );
  }
}

```

</details>


### Screenshots or Video

<details open>
<summary>Video demonstration</summary>


https://github.com/user-attachments/assets/97f9fa11-fbf8-43ae-b206-874d008665f1



</details>


### Logs

_No response_

### Flutter Doctor output

<details><summary>Doctor output</summary>

```console
Doctor summary (to see all details, run flutter doctor -v):
[!] Flutter (Channel [user-branch], 3.27.0-1.0.pre.149, on macOS 15.1.1 24B91 darwin-arm64,
    locale en)
    ! Flutter version 3.27.0-1.0.pre.149 on channel [user-branch] at
      /Users/victorsanni/development/flutter
      Currently on an unknown channel. Run `flutter channel` to switch to an official
      channel.
      If that doesn't fix the issue, reinstall Flutter by following instructions at
      https://flutter.dev/setup.
    ! Upstream repository unknown source is not a standard remote.
      Set environment variable "FLUTTER_GIT_URL" to unknown source to dismiss this error.
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 16.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.3)
[✓] VS Code (version 1.88.1)
[✓] Connected device (4 available)
    ! Error: Browsing on the local area network for Victor’s iPhone. Ensure the device is
      unlocked and attached with a cable or associated with the same local area network as
      this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)
[✓] Network resources
```

</details>