Fix bug #12422326 Unable to change text direction programmatically using setTextDirection Android SDK API

- force TextView internal layout recreation when its TextDirection is changed

Change-Id: I7d6b088a9235362e03cb6694392df71bbf5a323a

core/java/android/widget/TextView.java

@@ -8670,6 +8670,10 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
         super.onRtlPropertiesChanged(layoutDirection);
 
         mTextDir = getTextDirectionHeuristic();
+
+        if (mLayout != null) {
+            checkForRelayout();
+        }
     }
 
     TextDirectionHeuristic getTextDirectionHeuristic() {