Quick action for `unlinking` issues
As a follow-up to #214232 (closed), introduce the ability to unlink issues via quick actions.
Proposal
Add new quick action /unlink <#issue>
that destroys de link between the current issue and the provided one (despite the relation type).
This action will remove one link at a time, we have #393746 for adding support to remove multiple links.
Edited by Eugenia Grieff