Do not relaunch ConfirmLock after rotation

Bug: 122712696
Test: manual
Change-Id: I44fdbdb54b42c3a680bd83fc21c00e5769b83151

src/com/android/settings/biometrics/BiometricEnrollIntroduction.java

@@ -140,7 +140,7 @@ public abstract class BiometricEnrollIntroduction extends BiometricEnrollBase
         if (!mHasPassword) {
             // No password registered, launch into enrollment wizard.
             launchChooseLock();
-        } else {
+        } else if (!mLaunchedConfirmLock || mToken == null) {
             launchConfirmLock(getConfirmLockTitleResId(), getChallenge());
         }
     }