Merge "[RFCOMM] Lock & check service before accessing it" am: 1c2f61ce am:...

Merge "[RFCOMM] Lock & check service before accessing it" am: 1c2f61ce am: 4783d51a am: 8b4579d4

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2301017



Change-Id: Id51d8543b230af3e4300b797ab8a4d0c57abb48b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>