Merge "Don't clear requested SysUI visibility if the source doesn't exist" into rvc-dev am: 9e1a5ebb am: f50c8743

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11835421

Change-Id: I756f41680588d98a9d97c28f7580fc20d93a1298