10007 Embedding testing app (cla: yes)

10009 [macos] Revert check on FlutterCodecs and refactor message function] (cla: yes)

10010 Use simarm_x64 when targeting arm (cla: yes)

10012 Undelete used method (cla: yes)

10021 Added a DartExecutor API for querying # of pending channel callbacks (cla: yes)

10056 Update .cirrus.yml (cla: yes)

10063 Track clusters and return cluster boundaries in getGlyphPositionForCoordinates (emoji fix) (affects: text input, cla: yes, crash)

10064 Disable DartLifecycleTest::ShuttingDownTheVMShutsDownAllIsolates in runtime_unittests. (cla: yes)