Merge "Add a feature flag for the udfps keyguard view refactor" into udc-dev am: 9dcad8dd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22816858



Change-Id: Ibbfcec2deb25f0c380fb39bde8c5bbd2577a6b43
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>