PLAT-8513: Set accessibilityLive to true for reading changed text of WheelSliderPanel
PLAT-8513: Set accessibilityLive to true for reading changed text of WheelSliderPanel

Set aria-live to assertive using accessibilityLive API.

https://jira2.lgsvl.com/browse/PLAT-8513
Enyo-DCO-1.1-Signed-off-by: Bongsub Kim bongsub.kim@lgepartner.com

Change-Id: Ie0ec93c1f13d2a17ddfc5681377843971119cf6d

enyojs/enyo-strawman