Bug fix - when enrolled, biometrics have ok safety state.

Bug: 222336582
Test: atest SettingsUnitTests
Change-Id: Ia90329fa126b181e87ff7ed626ba33eca1e6bf7d

src/com/android/settings/biometrics/face/FaceStatusUtils.java

@@ -75,7 +75,10 @@ public class FaceStatusUtils {
                 : FaceEnrollIntroduction.class.getName();
     }
 
-    private boolean hasEnrolled() {
+    /**
+     * Returns whether at least one face template has been enrolled.
+     */
+    public boolean hasEnrolled() {
         return mFaceManager.hasEnrolledTemplates(mUserId);
     }
 }