Merge "aaudio: fix race when disconnecting" into rvc-dev am: 5a126eaf40 am: 8ab3420d89

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

Change-Id: I80f1f6d8e450a0508906940847aa2b2d400743bb