Fix issue where a new relation could not be added from the raw membership editor dropdown (close #6796)
Fix issue where a new relation could not be added from the raw membership editor dropdown (close #6796)

digidem/iD,morray/iD,kartta-labs/iD,openstreetmap/iD,kartta-labs/iD,digidem/iD,openstreetmap/iD,morray/iD,openstreetmap/iD,kartta-labs/iD