Is there an existing issue for this?

• I have searched the existing issues
• I have read the guide to filing a bug

Steps to reproduce

1. replace testWidgets in tests/services/RestaurationTests.dart with testWidgetsWithLeakTracking
2. Run tests
3. See error

Or remove allowList is #134832

leakTrackingTestConfig: const LeakTrackingTestConfig(notDisposedAllowList:
      <String, int?>{'RestorationManager': 1})