[VRR] Use UXR values for velocity/frame rate calculation

Fixes: 343772301

In our UXR study, we found that for velocities greater than
1500dp/s, we need to use 120fps to get a premium experience.
Below that, 80fps is required for a premium experience.

Test: modified existing tests
Change-Id: I010d5a7113fe1651a04b9f3dad14ce77d87daf19