SF: keep HWVsync on as long as present fences are ignored

Test: android.graphics.cts.FrameRateOverrideTest#testAppBackpressure on aosp_cf_x86_64_only_phone-trunk_staging-userdebug
Fixes: 330556662
Change-Id: I7a61075ec432d349bc0f155a032f4372573798e0
2 files changed