The case where user input is required (after export) must consider uic_ref on stop_area level
After export all objects with missing uic_ref tag are highlighted and user input is required. However, for stops or platforms that are part of a stop_area relation, the uic_ref is not needed on the object itself if it is present on the stop_area relation. Currently the highlighting and uic_ref dummy are added even though a proper uic_ref is present on the parent relation.