perf: 补充演示模式限制路由 (#115)

Author: insistence

ruoyi-fastapi-backend/middlewares/demo_mode_middleware.py

@@ -27,6 +27,8 @@ async def dispatch(self, request: Request, call_next: RequestResponseEndpoint) -
             'system/dict',
             'system/config',
             'system/notice',
+            'system/file',
+            'system/plugin',
             'monitor/operlog',
             'monitor/logininfor',
             'monitor/online',