[RRS] Enable RRS in FHD+ by default

The impact of the change only aims to users who have never configed RRS
and those who do factory reset themselves.

Bug: 232536153
Test: factory reset the device and check RRS setting in FHD+
Test: configure RRS and check the config is stored after rebooting
Test: disable smooth display and check the expected refresh rate
Change-Id: I01c46ac2566f0b060fcf23a092601f05bbf568cb
1 file changed