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

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

Change-Id: Ib93c49b8caaba44ec5fc73f07db17ce85fb03501