Merge "aaudio: fix race when disconnecting" into rvc-dev am: 5a126eaf40 am: 36abeac28f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/11761087

Change-Id: I986d0e230a4e809704a68904a2a9d009a8738167