BHV-12260: Item border show and hide when marquee flow

Issue:
TranslateZ is creating H/W accelerated layer and make small blurred gap between normal and accelerated layer.

Fix:
Change translateZ value from -0.01 to "-0.1px".
This fix can reduce the gap between H/W accelerated layer and normal layer.
So that remove random blurred line show and hide.

Previous PR is reverted because it was not reset translateZ to null. So, fixed it.

DCO-1.1-Signed-Off-By: Kunmyon Choi kunmyon.choi@lge.com
BHV-12260: Cleaning JSHint warning

DCO-1.1-Signed-Off-By: Kunmyon Choi kunmyon.choi@lge.com
Merge pull request #1504 from enyojs/BHV-12260-kunmyonchoi-new

BHV-12260: Item border show and hide when marquee flow

Reviewed-By: Cole Davis (cole.davis@lge.com)