Merge "Fix UiAutomation for visible background users." into udc-dev am: eadbbd8c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22339111



Change-Id: I1a26a7f68f567dcad299e1a4278c58645fcbf511
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>