Moving hover state status bar adjustments down to 600dp

Initially they were only introduced for 720dp but usually we consider large screen anything above 600dp. That's also where shade header (aka status bar in shade) becomes single line so it seems like a great inflection point.

Bug: 249859409
Test: Verifying visual changes on device with 600dp screen
Change-Id: I081b514daae3495d6c2d3d738f3c02f961b5367e