anv: rework Wa_14017076903 to only apply with occlusion queries
Fixes KHR-GL46.transform_feedback.* tests with zink+anv on DG2
Signed-off-by: Lionel Landwerlin lionel.g.landwerlin@intel.com Fixes: c34916f8 ("anv: implement occlusion query related Wa_14017076903")