Merge "Use Messenger to replace broadcast for interaction of test app" into stage-aosp-udc-ts-dev am: f696f4eaed am: 6d85684b4b

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/24175766

Change-Id: I28c13c6c7b845aedf81f3142d84f16ceb7327de2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>