fixup! fix(mapping): add unsynced user to the firebase user update list

Author: thenav56

apps/contributor/firebase/pull.py

@@ -38,9 +38,13 @@ def pull_users_from_firebase():
 
     users_to_pull = list[ContributorUser]()
     for key, valid_user in valid_users:
+        username = valid_user.username
+        # XXX: For OSM users, firebase doesn't include username
+        if username in ["", None, firebase_models.UNDEFINED]:
+            username = key
         user = ContributorUser(
             firebase_id=key,
-            username=valid_user.username or key,  # XXX: For OSM users, firebase doesn't include username
+            username=username,
             created_at=valid_user.created,
             modified_at=valid_user.created,
             # NOTE: Setting firebase_last_pushed so that we can send updates to firebase.