Fix the issue of using SilkFx crash on non-HDR-supported phone.

- ideally on non-HDR-supported phone, `Display#isHdrSdrRatioAvailable`
  should be false, while it's not the case in such phone now. The reason
  is hdrSdrRatio always gets updated. We should reject such update if
  there is no SdrHdrRatioMap loaded.

Bug: 280804824
Test: play with SilkFX; LocalDisplayAdapterTest
Change-Id: If162fc15cae033d056f22d02625ad955006dd65a