Based on this discussion, iffy PRs currently have to wait forever since they will only be automatically tried once all the rollup=never PRs have laded. So maybe let's treat rollup-iffy and rollup=never the same for queue priority?
I debated whether it makes sense to instead change iffy and never to both use p=-1 but I think this is better for now since it lets us adjust in the future if needed.
Based on this discussion, iffy PRs currently have to wait forever since they will only be automatically tried once all the rollup=never PRs have laded. So maybe let's treat rollup-iffy and rollup=never the same for queue priority?