Merge "Add comments stating the configs for visible background users are not...

Merge "Add comments stating the configs for visible background users are not ready for production" into udc-dev am: 5191e0d7 am: 208bd182 am: 53e00389 am: dad868a2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24140525



Change-Id: I3b4aef151b30cdef8d7fb8a10c0be5f1a52886f3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>