SF: avoid a composition cycle when the FrameRate votes updates

SF would still do a composition if the display mode changes, but
it is not required for every frame rate vote change.

Bug: 339759346
Test: android.platform.test.scenario.gmail.OpenCloseComposeEmailMicrobenchmark#testOpenCloseComposeEmail
Change-Id: Ia01a13b1a167b3a0a67cf7be3db5e64b9405580a
11 files changed