Merge "Only update the compat system UI visibility if the source is valid"...

Merge "Only update the compat system UI visibility if the source is valid" into tm-dev am: 1fab4540

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18583184



Change-Id: I2f698727952f1d02aa824769b58140a1b981a433
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>