Merge "audio: Clarify "mute" behavior for playback parameters" into main am: 9bb7c1cb45

Original change: https://android-review.googlesource.com/c/platform/system/hardware/interfaces/+/3422482

Change-Id: I2e757f2b921931ac5d1ac3a0662666a755ecddf1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>