Reverts flutter/flutter#132669

Introduced failure on `windows/mac/linux framework_library_tests`.

```
05:41 +7318 ~22 -1: /b/s/w/ir/x/w/flutter/packages/flutter/test/material/menu_bar_theme_test.dart: (tearDownAll) [E]                                                                                   
  Expected: leak free
    Actual: <Instance of 'Leaks'>
     Which: contains leaks:
            # The text is generated by leak_tracker.
            # For leak troubleshooting tips open:
            # https://github.com/dart-lang/leak_tracker/blob/main/doc/TROUBLESHOOT.md
            notDisposed:
              total: 3
              objects:
                ValueNotifier<_OverlayEntryWidgetState?>:
                  test: Constructor parameters override theme parameters
                  identityHashCode: 407433615
                FocusScopeNode:
                  test: Constructor parameters override theme parameters
                  identityHashCode: 513181650
                FocusScopeNode:
                  test: Constructor parameters override theme parameters
                  identityHashCode: 704743556
            
  package:matcher                                                                   expect
  package:flutter_test/src/widget_tester.dart 458:18                                expect
  package:leak_tracker_flutter_testing/src/leak_tracking_flutter_testing.dart 81:5  _tearDownTestingWithLeakTracking
  ===== asynchronous gap ===========================
  dart:async                                                                        _CustomZone.registerBinaryCallback
  package:leak_tracker_flutter_testing/src/leak_tracking_flutter_testing.dart 59:9  configureLeakTrackingTearDown.<fn>
```