81435 Remove extended attributes from entire Flutter project (platform-ios, tool, cla: yes, waiting for tree to go green, t: xcode)

81437 Ignore the sort order of imports in generated_plugin_registrant.dart (tool, cla: yes, waiting for tree to go green)

81451 [flutter_tools] remove mocks from xcode test (tool, cla: yes)

81475 [flutter_tools] remove mocks from devfs web, cache, and xcode migrator test (tool, cla: yes, waiting for tree to go green)

81485 [flutter_tools] remove all mocks from plugins_test (tool, cla: yes, waiting for tree to go green)

81487 Revert “[flutter_tools] remove mocks, globals from golden comparator and test runner tests” (tool, cla: yes)