Crashes on Flutter 3.47.0 #237

Pinput doesn't work on Flutter 3.47.0, if you use the new material_ui/cupertino_ui packages.

In particular, it crashes with a "No Material widget found":

#0      debugCheckHasMaterial.<anonymous closure> (package:flutter/src/material/debug.dart:40:7)
#1      debugCheckHasMaterial (package:flutter/src/material/debug.dart:67:4)
#2      _PinputState.build (package:pinput/src/pinput_state.dart:289:12)

The problem is this line in pinput_state.dart

assert(debugCheckHasMaterial(context));

I believe that the problem is that debugCheckHasMaterial looks for a Material class in the ancestors, but the Material class in material_ui is a different class.

To Reproduce

0. Install Flutter 3.47.0
1. Go the example folder of pinput
2. Modify the pubspec.yaml to force the latest version of flutter:

  sdk: ^3.13.0
  flutter: '>=3.46.0'

4. Run the upgrader dart fix --apply --code=migrate_design_widgets
5. Run the example app - it will work.
6. Modify the example app, and replace import 'package:flutter/material.dart'; with import 'package:material_ui/material_ui.dart';
7. The app will no longer work.

To avoid

I can do something nasty to avoid the problem - which is to wrap the Pinput in the "old" Material class:

import 'package:material_ui/material_ui.dart';
import 'package:flutter/material.dart' as hack;

Widget myPut() {
  return hack.Material(child: Pinput(....));
}