BHV-10371: DataList: 5way Down does not Spot Drawer

Issue

When pressing 5-way down after loading, the spotlight does not go the activator, the topmost element of the drawer

Fix

Add a check to ensure that when no element is currently spotlighted, and the drawer receives a spotlightFocus event as a result of a 5-way input, the activator element is the one spotlighted

Enyo-DCO-1.1-Signed-off-by: Krishna Rangarajan <krishna.rangarajan@lge.com>