82290 use throwsA matcher instead of try-catch-fail (a: tests, team, tool, framework, cla: yes, waiting for tree to go green)

82297 remove noop primitive operations (a: tests, team, tool, framework, f: material design, cla: yes, waiting for tree to go green)

82298 Re-land:  Allow users to pass in Xcode build settings as env variables to flutter build macos FLUTTER_XCODE_  (tool, cla: yes, waiting for tree to go green)

82301 [flutter_tools] remove mocks from hot test (tool, cla: yes, waiting for tree to go green)

82309 [flutter_tool] Suggest fix for transform input (tool, cla: yes, waiting for tree to go green)