lint and fix a test

Author: njbrake

src/agents/mcp/server.py

@@ -64,7 +64,7 @@ def __init__(self, cache_tools_list: bool, client_session_timeout_seconds: float
             by calling `invalidate_tools_cache()`. You should set this to `True` if you know the
             server will not change its tools list, because it can drastically improve latency
             (by avoiding a round-trip to the server every time).
-            
+
             client_session_timeout_seconds: the read timeout passed to the MCP ClientSession.
         """
         self.session: ClientSession | None = None

tests/mcp/test_server_errors.py

@@ -6,7 +6,7 @@
 
 class CrashingClientSessionServer(_MCPServerWithClientSession):
     def __init__(self):
-        super().__init__(cache_tools_list=False)
+        super().__init__(cache_tools_list=False, client_session_timeout_seconds=5)
         self.cleanup_called = False
 
     def create_streams(self):