Merge branch 'flutter:main' into done-refocus

Author: JunbinDeng

DEPS

@@ -39,7 +39,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': '9030f94e7d660e4b924fd3fb7c0646a7518ff26e',
+  'dart_revision': '38c809abde23dd38309a01ded47d03425c9098b3',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py