fix style

Author: wangliang181230

apps/application/chat_pipeline/step/chat_step/impl/base_chat_step.py

@@ -185,8 +185,7 @@ def execute(self, message_list: List[BaseMessage],
                 mcp_output_enable=True,
                 **kwargs):
         chat_model = get_model_instance_by_model_workspace_id(model_id, workspace_id,
-                                                              **(
-                                                                      model_params_setting or {})) if model_id is not None else None
+                                                              **(model_params_setting or {})) if model_id is not None else None
         if stream:
             return self.execute_stream(message_list, chat_id, problem_text, post_response_handler, chat_model,
                                        paragraph_list,