Fix kotlin nullable errors that were exposed by setting the retention
of android.annotation.NonNull and android.annotation.Nullable to
class retention.
Bug: 294110802
Test: builds
Change-Id: I6aa0516fa4f6443b6d4dff873baf3b08ff9189f0
This flow will be included in Device Unlock settings with the
Fingerprint and Face Unlock.
Bug: b/293905106
Test: atest RemoteAuthEnrollFinishTest
Change-Id: I5d24e23948e508dcff5216cd63eba8d9fc9ec97f