BHV-14241: Marquee speed is not linear after refresh data grid list

### Issue:
Marquee text lost timing function given by CSS after data refresh on DataGridList Sample

### Fix:
Remove CSS timing function and give linear timing function dynamically in _marquee_addAnimationStyles

DCO-1.1-Signed-Off-By: Kunmyon Choi kunmyon.choi@lge.com