Fix issues in SelectableItem, RadioItem, and RadioItemGroup. Enyo-DCO-1.1-Signed-off-by: Brooke Peterson <brooke.peterson@lge.com>
Merge pull request #1465 from enyojs/BHV-11516-brookepeterson

-- This removes the `moon.RadioItemIndicator` kind.

Fix issues in SelectableItem, RadioItem, and RadioItemGroup.