Merge "Wait for systemui udfps overlay ready to show settings udfps enroll...

Merge "Wait for systemui udfps overlay ready to show settings udfps enroll view. am: be823bc5" into udc-qpr-dev am: 0df79b1c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/23814463



Change-Id: I364fb2e57fccd35f15a4adb61918ac2a8568ff9b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>