radv: fix missing variants for the last VGT stage with shader object
nextStage=NONE is always a valid case.
New VKCTS coverage can be found here https://gerrit.khronos.org/c/vk-gl-cts/+/15976
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
nextStage=NONE is always a valid case.
New VKCTS coverage can be found here https://gerrit.khronos.org/c/vk-gl-cts/+/15976