Ability to filter issues by closing MRs
Description
If I want to pick up some issue to fix/implement it, I sort them by ~"up-for-grabs" or ~"Accepting Merge Requests" labels.
But I still have to spend my time opening every found issue just to figure out if it already has a MR which closes the issue.
I would like to find issues sorted by those labels and without any closing MRs.
Proposal
Add ability to sort by closing MRs.
Links / references
I believe I've already seen such an issue, but I couldn't find it.
Edited by blackst0ne