CI Optimizer: it would really be nice if "Always run CI on topmost PR of a stack" could actually mean "Always run CI on topmost non-draft PR of a stack". We frequently have stacks with continuing work in drafts, and:
• running CI on the draft isn't necessarily that useful; it's not complete and may not be expected to pass
• we don't get validation on the published upstack prs, which we may want to merge while keeping the draft open
It would also be nice if PRs had a "always run CI on this PR" toggle or something