Enable visual feedback when entering FRP pattern

When the original lock pattern is verified for Factory Reset Protection
(FRP), the original setting of LOCK_PATTERN_VISIBLE is unknown.
However, it's likely to be true, since that is the value that gets set
automatically when a pattern is first set.  It would only be false if
the user went into Settings and disabled "Make pattern visible".  So, to
be consistent with this, fix the low-level default to be true instead of
false.  This enables visual feedback when entering the FRP pattern.

Bug: 270013005
Change-Id: If295999da34510c17ebfb323dd5215418eaa0852

core/java/com/android/internal/widget/LockPatternUtils.java

@@ -1058,7 +1058,10 @@ public class LockPatternUtils {
      */
     @UnsupportedAppUsage
     public boolean isVisiblePatternEnabled(int userId) {
-        return getBoolean(Settings.Secure.LOCK_PATTERN_VISIBLE, false, userId);
+        // Default to true, since this gets explicitly set to true when a pattern is first set
+        // anyway, which makes true the user-visible default.  The low-level default should be the
+        // same, in order for FRP credential verification to get the same default.
+        return getBoolean(Settings.Secure.LOCK_PATTERN_VISIBLE, true, userId);
     }
 
     /**