GF-60665: Close ExpandableInput when pressing Enter.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Avoid overriding spotlightIgnoredKeys.
Added fix for re-highlighting header when only using the pointer to expand/contract (ANG-576).
Merge pull request #1115 from enyojs/GF-60665-aarontam

GF-60665: Close ExpandableInput when pressing Enter.