chore: add mcp_tool_id parameter to i_chat_node.py

Author: liuruibin

apps/application/flow/step_node/ai_chat_step_node/i_chat_node.py

@@ -58,6 +58,7 @@ def execute(self, model_id, system, prompt, dialogue_number, history_chat_record
                 model_setting=None,
                 mcp_enable=False,
                 mcp_servers=None,
+                mcp_tool_id=None,
                 mcp_tool_ids=None,
                 mcp_source=None,
                 tool_enable=False,