[automerger skipped] leaudio/testapp: Fix threading issue on callback calls am: 3f4af021 am: 76f87ad6 -s ours

am skip reason: Merged-In I45f677671330a25fca8099d2bb13ae2def2f88f5 with SHA-1 3f4af021 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/19133809



Change-Id: Idc0330b5dee75af48e6935242019b77fb34891a5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>