This pull request was opened from and to a release candidate branch. This should only be done as part of the official Flutter release process. If you are attempting to make a regular contribution to the Flutter project, please close this PR and follow the instructions at Tree Hygiene for detailed instructions on contributing to Flutter.

Reviewers: Use caution before merging pull requests to release branches. Ensure the proper procedure has been followed.

autosubmit label was removed for flutter/flutter/170285, because - The status or check suite Mac tool_integration_tests_5_5 has failed. Please fix the issues identified (or deflake) before re-applying this label.

Looks like there are some legit failures of the

[ 41.7s] stdout: [   +7 ms] Error: TypeError: Failed to fetch dynamically imported module: https://www.gstatic.com/flutter-canvaskit/9d85d135efe3e033f36658a3a2ee521140ea3ec9/chromium/canvaskit.js
[ 41.7s] stdout: 
[ 41.7s] stdout:            Dart stack trace:
[ 41.7s] stdout:            Non-error `null` thrown by JS does not have stack trace.
[ 41.7s] stdout:            Caught in Dart at:
[ 41.7s] stdout: 
[ 41.7s] stdout: 
[ 41.7s] stdout:            dart-sdk/lib/_internal/js_shared/lib/js_util_patch.dart 307:16                    callConstructor
...

variety, e.g. https://ci.chromium.org/ui/p/flutter/builders/try/Windows%20tool_integration_tests_7_9/10115/overview.

The test that is failing (test/integration.shard/isolated/dart_data_asset_test.dart: dart data assets flutter run on chrome --debug) was actually removed in the master branch. Looks like a feature was submitted then reverted: #169273 then #170034. I also see it was reverted because of the test failing here.

Thinking we need to cherry-pick the revert.