Merge "BTAudio: report session ended after cleaning up" am: 5ae008679d am: 5373028c3c am: 3c1ec94cd0 am: 7054e598f4

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1371705

Change-Id: I3c0b2bae461021da37084affa79366380eca50f1