Delay unlock during secure lock device until two-factor auth complete

Updates AuthenticationRepository and CredentialInteractor to await
two-factor authentication completion when secure lock device is enabled
(for flexiglass-enabled secure lock device implementation)

Bug: 401645997
Flag: android.security.secure_lock_device
Test: atest AuthenticationRepositoryTest
Test: atest CredentialInteractorImplTest
Change-Id: I26396923c9ef5d72f24b056ff1608b2772dbb807