Do not run face auth if keyguard is already authenticated with face.

Fixes: 285518497
Test: atest DeviceEntryFaceAuthRepositoryTest
Change-Id: I2536ae302b6b7d240e931b51698ac125bd1668ea

packages/SystemUI/src/com/android/systemui/keyguard/data/repository/DeviceEntryFaceAuthRepository.kt

@@ -365,6 +365,7 @@ constructor(
                     "nonStrongBiometricIsAllowed",
                     faceAuthLog
                 ),
+                logAndObserve(isAuthenticated.isFalse(), "faceNotAuthenticated", faceAuthLog),
             )
             .reduce(::and)
             .distinctUntilChanged()

packages/SystemUI/tests/src/com/android/systemui/keyguard/data/repository/DeviceEntryFaceAuthRepositoryTest.kt

@@ -260,6 +260,7 @@ class DeviceEntryFaceAuthRepositoryTest : SysuiTestCase() {
             assertThat(authStatus()).isEqualTo(SuccessAuthenticationStatus(successResult))
             assertThat(authenticated()).isTrue()
             assertThat(authRunning()).isFalse()
+            assertThat(canFaceAuthRun()).isFalse()
         }
 
     private fun uiEventIsLogged(faceAuthUiEvent: FaceAuthUiEvent) {