Merge "leaudio: Add support for Mute/Unmute" into tm-dev am: e24befa1

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/18283622



Change-Id: I98e7251e5d308d4c2cb6586a4db37b5ea0599a5d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>