Merge "audio: make sure to set back to AudioMode::NORMAL after the test case" into sc-dev am: 183f6190a8 am: d9130a8121

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15310729

Change-Id: Idc3601ea5b56acab706ae4eb7019d77d4883a22c