fix scroll shake bug

Author: lc1006

android/src/main/java/com/rnnestedscrollview/ReactNestedScrollView.java

@@ -281,7 +281,7 @@ public void fling(int velocityY) {
         scrollWindowHeight / 2);
 
       postInvalidateOnAnimation();
-
+      super.fling(velocityY);
       // END FB SCROLLVIEW CHANGE
     } else {
       super.fling(velocityY);