Fix bug #5282141 ScrollView overscroll should not generate invalidations when not needed (ANR textview redraws constantly when touched)

- check if the overscroll range is not 0
- check if we are in the correct overscroll mode
- also udpate HorizontalScrollView the same way

Change-Id: I0bb37f9813a5871eb856914786db5c06de59e4d3