GF-61350: Prevent using outdated scroll position when scroller size changes.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Fix the root issue instead of effectively forcing a scrollTo after the original scrollTo call was stopped via getScrollBounds.
Merge pull request #1137 from enyojs/GF-61350-aarontam

GF-61350: Prevent using outdated scroll position when scroller size changes.