fix plugin initializer

app/startup/lifecycle.py

@@ -5,7 +5,7 @@ from fastapi import FastAPI
 
 from app.startup.workflow_initializer import init_workflow, stop_workflow
 from app.startup.modules_initializer import shutdown_modules, start_modules
-from app.startup.plugins_initializer import init_plugins_async
+from app.startup.plugins_initializer import init_plugins_async, stop_plugins
 from app.startup.routers_initializer import init_routers
 
 
@@ -40,4 +40,5 @@ async def lifespan(app: FastAPI):
         shutdown_modules(app)
         # 关闭工作流
         stop_workflow(app)
-
+        # 关闭插件
+        stop_plugins()