Add lock to protect UnwantedInteractionBlocker am: a91d8576d9 am: 49a167382e am: 72ef6b4c0b am: 80b9a678fa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18494314

Change-Id: Id25f87736a8eb31f4b631e7bf46d8b19cb9b7c28
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>