Merge "Migrate the fallback device logic of A2dp and Hfp into...

Merge "Migrate the fallback device logic of A2dp and Hfp into AudioRoutingManager" into main am: 6f3decfc

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2758686



Change-Id: I7b8535ead174d8db9c5ecef12f444d01fc287fab
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>