Merge "audio: make sure to set back to AudioMode::NORMAL after the test case" into sc-dev am: 183f6190a8 am: d9130a8121 am: da6d4796e3

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

Change-Id: Ib139a693e35ad01751f109d81862273dbb6ebfc4