Merge "Add background protection when work biometrics is shown" into tm-dev am: ed00c662 am: 9eeb0112 am: 00090b1d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18351382



Change-Id: I94f2454013dc0bf3671d69d92a5906b32183912d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>