On iOS, if you set your own action to have that keyboard shortcut, then it certainly used to override the default functionality. The issue with creating an action to do this is in identifying the current workspace that has been applied. There isn’t a way to do this, and so as a result, I still don’t think there’s a way to query the search parameters.
If you were always matching a complete set of tags, you could duplicate the current drafts tags, but otherwise I think you may be out of luck.