BHV-19184: Continue scroll animation upon a tap.

### Issue
In `moon.IntegerPicker` controls, tapping the client area while the control was scrolling to a value would interrupt the scroll animation and could potentially leave the currently displayed value in an undesired position.

### Fix
We utilize the `tapToStop` property of `enyo.Scroller`, that is added via https://github.com/enyojs/enyo/pull/953.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>