Reverts flutter/flutter#130484. /cc @ronnnnn
Example failure: https://ci.chromium.org/ui/p/flutter/builders/prod/Mac%20framework_tests_libraries/12185/overview
<details>
<summary>Failure logs...</summary>
```
04:51 +5379 ~18: /Volumes/Work/s/w/ir/x/w/flutter/packages/flutter/test/material/about_test.dart: Barrier dismissible Barrier is dismissible with default parameter
âââ¡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK âââââââââââââââââââââââââââââââââââââââââââââââââââââ
The following TestFailure was thrown running a test:
Expected: <1>
Actual: <2>
When the exception was thrown, this was the stack:
#4 main.<anonymous closure>.<anonymous closure> (file:///Volumes/Work/s/w/ir/x/w/flutter/packages/flutter/test/material/about_test.dart:776:7)
<asynchronous suspension>
#5 testWidgets.<anonymous closure>.<anonymous closure> (package:flutter_test/src/widget_tester.dart:165:15)
<asynchronous suspension>
#6 TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:1008:5)
<asynchronous suspension>
<asynchronous suspension>
(elided one frame from package:stack_trace)
This was caught by the test expectation on the following line:
file:///Volumes/Work/s/w/ir/x/w/flutter/packages/flutter/test/material/about_test.dart line 776
The test description was:
Barrier is dismissible with default parameter
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ
04:51 +5379 ~18 -1: /Volumes/Work/s/w/ir/x/w/flutter/packages/flutter/test/material/about_test.dart: Barrier dismissible Barrier is dismissible with default parameter [E]
Test failed. See exception logs above.
The test description was: Barrier is dismissible with default parameter
To run this test again: /Volumes/Work/s/w/ir/x/w/flutter/bin/cache/dart-sdk/bin/dart test /Volumes/Work/s/w/ir/x/w/flutter/packages/flutter/test/material/about_test.dart -p vm --plain-name 'Barrier dismissible Barrier is dismissible with default parameter'
```
</details>
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