Repository: flutter
Issue: DropdownMenu Entries Not Positioned Correctly on Keyboard Appearance when `requestFocusOnTap` set to `true`
Labels: a: text input,framework,f: material design,has reproducible steps,P2,team-design,triaged-design,found in release: 3.22

### Steps to reproduce

1. Use the provided code snippet from the Flutter examples below. The only difference from the actual example is the property _requestFocusOnTap_ set to **true**
2. Click into the `DropdownMenu` to enter a search term.
3. Observe the behavior when the keyboard appears.

### Expected results

The `DropdownEntries` should move upwards and be displayed right under the `DropdownMenu` when the keyboard appears.


### Actual results

The `DropdownEntries` remain further down on the screen and do not follow the `DropdownMenu` as it moves upwards, causing a misalignment.

### Code sample

<details open><summary>Code sample</summary>

```dart
import 'package:flutter/material.dart';

/// Flutter code sample for the [DropdownMenuEntry] `labelWidget` property.

enum ColorItem {
  blue('Blue', Colors.blue),
  pink('Pink', Colors.pink),
  green('Green', Colors.green),
  yellow('Yellow', Colors.yellow),
  grey('Grey', Colors.grey);

  const ColorItem(this.label, this.color);
  final String label;
  final Color color;
}

class DropdownMenuEntryLabelWidgetExample extends StatefulWidget {
  const DropdownMenuEntryLabelWidgetExample({super.key});

  @override
  State<DropdownMenuEntryLabelWidgetExample> createState() =>
      _DropdownMenuEntryLabelWidgetExampleState();
}

class _DropdownMenuEntryLabelWidgetExampleState
    extends State<DropdownMenuEntryLabelWidgetExample> {
  late final TextEditingController controller;

  @override
  void initState() {
    super.initState();
    controller = TextEditingController();
  }

  @override
  void dispose() {
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    const String longText =
        'is a color that sings of hope, A hue that shines like gold. It is the color of dreams, A shade that never grows old.';

    return Scaffold(
      body: Center(
        child: DropdownMenu<ColorItem>(
          width: 300,
          controller: controller,
          initialSelection: ColorItem.green,
          requestFocusOnTap: true,
          label: const Text('Color'),
          onSelected: (ColorItem? color) {
            print('Selected $color');
          },
          dropdownMenuEntries: ColorItem.values
              .map<DropdownMenuEntry<ColorItem>>((ColorItem item) {
            final String labelText = '${item.label} $longText\n';
            return DropdownMenuEntry<ColorItem>(
              value: item,
              label: labelText,
              labelWidget: Text(
                labelText,
                maxLines: 1,
                overflow: TextOverflow.ellipsis,
              ),
            );
          }).toList(),
        ),
      ),
    );
  }
}

class DropdownMenuEntryLabelWidgetExampleApp extends StatelessWidget {
  const DropdownMenuEntryLabelWidgetExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: DropdownMenuEntryLabelWidgetExample(),
    );
  }
}

void main() {
  runApp(const DropdownMenuEntryLabelWidgetExampleApp());
}

```

</details>


### Screenshots or Video

<details open>
<summary>Screenshots / Video demonstration</summary>

[dropdownmenu.webm](https://github.com/flutter/flutter/assets/49316150/0e973408-407f-463a-b248-7cdd63faa76b)

</details>


### Logs

<details open><summary>Logs</summary>

```console

```

</details>


### Flutter Doctor output

[√] Flutter (Channel stable, 3.22.1, on Microsoft Windows [Version 10.0.22631.3593], locale     
    de-DE)
    • Flutter version 3.22.1 on channel stable at C:\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision a14f74ff3a (2 days ago), 2024-05-22 11:08:21 -0500
    • Engine revision 55eae6864b
    • Dart version 3.4.1
    • DevTools version 2.34.3

[√] Windows Version (Installed version of Windows is version 10 or higher)

[√] Android toolchain - develop for Android devices (Android SDK version 33.0.0-rc4)
    • Android SDK at C:\Users\demo\AppData\Local\Android\Sdk
    • Platform android-34, build-tools 33.0.0-rc4
    • ANDROID_SDK_ROOT = C:\Users\demo\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jbr\bin\java
    • Java version OpenJDK Runtime Environment (build 17.0.9+0--11185874)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.2.3)
    • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
    • Visual Studio Community 2022 version 17.2.32526.322
    • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2023.2)
    • Android Studio at C:\Program Files\Android\Android Studio
    • 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 17.0.9+0--11185874)

[√] IntelliJ IDEA Ultimate Edition (version 2021.2)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA 2021.1.2
    • 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

[√] IntelliJ IDEA Ultimate Edition (version 2023.2)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA 2023.2
    • 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

[√] VS Code (version 1.89.1)
    • VS Code at C:\Users\demo\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.88.0

[√] Connected device (4 available)
    • sdk gphone64 x86 64 (mobile) • emulator-5554 • android-x64    • Android 12 (API 31)       
      (emulator)
    • Windows (desktop)            • windows       • windows-x64    • Microsoft Windows [Version
      10.0.22631.3593]
    • Chrome (web)                 • chrome        • web-javascript • Google Chrome
      124.0.6367.210
    • Edge (web)                   • edge          • web-javascript • Microsoft Edge
      125.0.2535.51

[√] Network resources
    • All expected network resources are available.

• No issues found!