fix: ensure only active tools are processed in base_chat_node.py

--bug=1061252 --user=刘瑞斌 【工具】MCP被禁用后，依然可以在应用中调用 https://www.tapd.cn/62980211/s/1765960

Author: liuruibin

apps/application/flow/step_node/ai_chat_step_node/impl/base_chat_node.py

@@ -279,7 +279,7 @@ def _handle_mcp_request(self, mcp_enable, tool_enable, mcp_source, mcp_servers,
                 mcp_servers_config = json.loads(mcp_servers)
             elif mcp_tool_id:
                 mcp_tool = QuerySet(Tool).filter(id=mcp_tool_id).first()
-                if mcp_tool:
+                if mcp_tool and mcp_tool.is_active:
                     mcp_servers_config = json.loads(mcp_tool.code)
 
         if tool_enable:
@@ -288,6 +288,8 @@ def _handle_mcp_request(self, mcp_enable, tool_enable, mcp_source, mcp_servers,
                 self.context['execute_ids'] = []
                 for tool_id in tool_ids:
                     tool = QuerySet(Tool).filter(id=tool_id).first()
+                    if not tool.is_active:
+                        continue
                     executor = ToolExecutor(CONFIG.get('SANDBOX'))
                     if tool.init_params is not None:
                         params = json.loads(rsa_long_decrypt(tool.init_params))