refactor: 修改框架路径获取方式，规范化路径拼接

astrbot/core/db/plugin/sqlite_impl.py

@@ -3,8 +3,9 @@ import aiosqlite
 import os
 from typing import Any
 from .plugin_storage import PluginStorage
+from astrbot.core.utils.astrbot_path import get_astrbot_data_path
 
-DBPATH = "data/plugin_data/sqlite/plugin_data.db"
+DBPATH = os.path.join(get_astrbot_data_path(), "plugin_data", "sqlite", "plugin_data.db")
 
 
 class SQLitePluginStorage(PluginStorage):