refactor：重构配置热加载

app/modules/plex/__init__.py

@@ -1,17 +1,19 @@
 from typing import Optional, Tuple, Union, Any, List, Generator
 
 from app import schemas
+from app.core.config import on_config_change
 from app.core.context import MediaInfo
 from app.core.event import eventmanager
 from app.log import logger
 from app.modules import _ModuleBase, _MediaServerBase
 from app.modules.plex.plex import Plex
 from app.schemas import AuthCredentials, AuthInterceptCredentials
-from app.schemas.types import MediaType, ModuleType, ChainEventType, MediaServerType
+from app.schemas.types import MediaType, ModuleType, ChainEventType, MediaServerType, SystemConfigKey
 
 
 class PlexModule(_ModuleBase, _MediaServerBase[Plex]):
 
+    @on_config_change([SystemConfigKey.MediaServers.value])
     def init_module(self) -> None:
         """
         初始化模块