SF: use SurfaceFlingerProperties for frame_rate_override_global

This flag is accessed from DisplayManager in addition to SF,
so add it to SurfaceFlingerProperties instead of hardcoded flag.

Test: atest DisplayModeDirectorTests
Bug: 241447632
Change-Id: I1951bc5e17ec0f6304ecb91aa83555b8cce5e73a
5 files changed