Merge "[le audio] Null check when setting le audio active device" into main...

Merge "[le audio] Null check when setting le audio active device" into main am: b3fdf4b1 am: df9979d4

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/3387979



Change-Id: I2a8330d6ab69bdd7387202b0b69c57eaaec25048
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>