9338 Replace lock_guard with scoped_lock and use class template argument deduction. (cla: yes)

9343 Avoid a full screen overlay within virtual displays (cla: yes)

9346 Removed an unused class definition for iOS code. (cla: yes)

9347 Surrogate binary messenger (cla: yes)

9350 Update component manifests for ambient replace-as-executable (cla: yes)

9351 Android Embedding Refactor PR32: Clean up logs in new embedding. (cla: yes)

9354 Android Embedding Refactor PR33: Clean up FlutterJNI. (cla: yes)

9356 Add APIs for querying FlutterView for a FlutterEngine and listening for attachment/detachment (#29114). (cla: yes)