security: update local roles also when user id is initialized

Since erp5 commit https://lab.nexedi.com/nexedi/erp5/commit/f8cd3922d2 (base: introduce Person.initUserId, 2020-08-13) _setUserId is no longer called when person are created, so we need another way to trigger local role generation. Extend interaction so that it is called also on initUserId