Merge "Disable group volume control bar in output switcher systemUI dialog"...

Merge "Disable group volume control bar in output switcher systemUI dialog" into sc-dev am: 3245ab13 am: e304c72e am: 308140d2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14781656

Change-Id: Ica46fd3534bcaa337b1a7fac02d50d06321b668b