Make reset lockout PendingIntent immutable

Fixes: 170159763
Test: Lockout on keyguard, wait 30s, able to auth again
Change-Id: I463f4ff194254c6e4692e524af744f4b10d9ed35

services/core/java/com/android/server/biometrics/sensors/fingerprint/hidl/LockoutFrameworkImpl.java

@@ -135,6 +135,6 @@ public class LockoutFrameworkImpl implements LockoutTracker {
     private PendingIntent getLockoutResetIntentForUser(int userId) {
         return PendingIntent.getBroadcast(mContext, userId,
                 new Intent(ACTION_LOCKOUT_RESET).putExtra(KEY_LOCKOUT_RESET_USER, userId),
-                PendingIntent.FLAG_UPDATE_CURRENT);
+                PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
     }
 }