test(streamable-http): apply ruff import order

Author: Jianke LIN

tests/client/test_streamable_http.py

@@ -9,8 +9,8 @@
 import base64
 import json
 from collections.abc import AsyncIterator, Callable, Mapping
-from typing import Any
 from types import SimpleNamespace
+from typing import Any
 
 import anyio
 import httpx