Merge "Add fallback screen logic to CredentialSelectorActivity" into udc-dev am: 6eaa2302 am: 74371fd7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22183283



Change-Id: Ia7a6b50dff72d08aeb43c08ff3c81dbadf0caebd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>