Fix response of file client to store transaction

Author: hackermd

src/dicomweb_client/file.py

@@ -3235,7 +3235,8 @@ def store_instances(
                 success_item = Dataset()
                 success_item.ReferencedSOPClassUID = ds.SOPClassUID
                 success_item.ReferencedSOPInstanceUID = ds.SOPInstanceUID
-                success_item.RetrieveURL = None
+                success_item.RetrieveURL = None  # TODO
+                response.ReferencedSOPSequence.append(success_item)
 
         if len(failures) > 0:
             response.FailedSOPSequence = []