SF: update consistent criteria for heuristic refresh rate calculation

Enlarge the consistent criteria to apply heuristic logic for more cases.
To prevent introducing oscillation, this makes sure to only select a
valid know refresh rate if all the frametime in the layer history have
the same nearest known refresh rate.

Bug: 299201319
Test: presubmit
Change-Id: Ie317f7fe337c84c2c7314069cba1bd02a147bf6b