fix: do never link users with organisation identities

api/mysagw/oidc_auth/models.py

@@ -88,7 +88,7 @@ def _update_or_create_identity(self):
         ]:
             return None
         try:
-            identity = Identity.objects.get(
+            identity = Identity.objects.filter(is_organisation=False).get(
                 Q(idp_id=self.id) | Q(email__iexact=self.email),
             )
             # we only want to save if necessary in order to prevent adding historical