Format Python lifecycle tests

Apply ruff formatting to the new Python lifecycle regression tests so CI format checks pass.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Copilot

python/test_client.py

@@ -231,9 +231,7 @@ def failing_handler(session):
             raise RuntimeError("boom")
 
         with pytest.raises(RuntimeError, match="boom"):
-            await client.resume_session(
-                "session-1", create_session_fs_handler=failing_handler
-            )
+            await client.resume_session("session-1", create_session_fs_handler=failing_handler)
 
         session = captured["session"]
         assert session.session_id not in client._sessions
@@ -302,9 +300,7 @@ def create_provider(session):
             return object()
 
         with pytest.raises(RuntimeError, match="already active"):
-            await client.resume_session(
-                "session-1", create_session_fs_handler=create_provider
-            )
+            await client.resume_session("session-1", create_session_fs_handler=create_provider)
 
         session = captured["session"]
         assert client._sessions["session-1"] is existing