Merge "Show scrimmed bouncer from BiometricUnlockCtrl" into sc-v2-dev am: 83334b67a2 am: 8423874e7b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16263341

Change-Id: I0bcfe1052907544fc42139ddea6d43f15bffb6ec