SF: Add a missing field to LayerRequirement::operator==()

LayerRequirement::operator==() is missing
LayerRequirement::frameRateCategorySmoothSwitchOnly in its check. This
CL adds the field to the equality operator.

Flag: EXEMPT bug fix
Bug: 371584290
Test: Existing unit tests
Change-Id: I08ed14f935d614b95feaceaccc3794ddaa1b3c92