Merge "Fix thread safety in libaudioclient tests" into main am: d14f1ad8

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3135952



Change-Id: I0877644f63a4520640bd5c8a60b77d71110e9f62
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>