Fix primaryRangeIsSingleRate + touch on dVRR

Disable a primaryRangeIsSingleRate section on dVRR and allow late touch
boost to trigger when no layer score. On dVRR display, the primary
physical range may be a single rate,
but late touch boost should still be able to trigger.

Bug: 362379874
Flag: EXEMPT_bugfix
Test: atest libsurfaceflinger_unittest
Test: Twitter scrolling with and without video, with policy backdoor
Test: notification shade scrolling with policy backdoor
Change-Id: Ic5b2b298fe0df357f77ef8f06b1fc0fc248e0498