code: def _create_state_data(self, context, resp_args, relay_state):
          
          state = super()._create_state_data(context, resp_args, relay_state)
          state["target_entity_id"] = context.target_entity_id_from_path()
          return state
docs: Adds the frontend idp entity id to state
          See super class satosa.frontends.saml2.SAMLFrontend#save_state
  
          :type context: satosa.context.Context
          :type resp_args: dict[str, str | saml2.samlp.NameIDPolicy]
          :type relay_state: str
          :rtype: dict[str, dict[str, str] | str]