Fix TimePicker hour and minute inputs are resized on error (#154008)
Fixes [Defining inputDecorationTheme in TimePickerThemeData Causes Misalignment of Hour and Minute Input Boxes](https://github.com/flutter/flutter/issues/153549)
### Code sample
<details>
<summary>expand to view the code sample</summary>
```dart
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData(
timePickerTheme: const TimePickerThemeData(
inputDecorationTheme: InputDecorationTheme(),
),
),
home: Scaffold(
body: Center(
child: Builder(builder: (BuildContext context) {
return ElevatedButton(
onPressed: () async {
await showTimePicker(
context: context,
initialEntryMode: TimePickerEntryMode.input,
initialTime: TimeOfDay.now(),
);
},
child: const Text('Show Time Picker'),
);
}),
),
),
);
}
}
```
</details>
### Before
<img width="578" alt="Screenshot 2024-08-23 at 16 49 25" src="https://github.com/user-attachments/assets/f5da2495-551e-4110-85ea-120323cd38d2">
### After
<img width="578" alt="Screenshot 2024-08-23 at 16 51 03" src="https://github.com/user-attachments/assets/80224a10-e9d2-46d1-b2eb-f16358699744">
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