fix: take global_config from storage class

lightrag/lightrag.py

@@ -7,7 +7,7 @@ import warnings
 from dataclasses import asdict, dataclass, field
 from datetime import datetime
 from functools import partial
-from typing import Any, AsyncIterator, Callable, Iterator, cast, final, Literal
+from typing import Any, AsyncIterator, Callable, Iterator, cast, final, Literal, Optional, List, Dict
 
 from lightrag.kg import (
     STORAGES,