Revert "Fix touches in Large screen header"

Revert submission 20248350-flipFlag

Reason for revert: Part of DM+Platinum rotation as a culprit for b/255588071. 

Reverted Changes:
I51a3b403f:Fix touches in Large screen header
I01da41161:Use split_shade_header in all configurations
Ie0019d212:Make new headers flag true by default

Change-Id: I1bd47af5ee19a0fb04e3dbd83d14862d2e90a3f7