style(test): ruff format tdd timer cancel race steps (rebase fixup)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

features/steps/tdd_mcp_client_timer_cancel_race_steps.py

@@ -142,6 +142,7 @@ def step_trigger_timer_race(context: Context) -> None:
             # Ensure client is in running state
             if client.state not in ("running",):
                 from contextlib import suppress as _suppress
+
                 client._started = False
                 client._shutting_down = False
                 client._state = "idle"
@@ -166,6 +167,7 @@ def step_trigger_timer_race(context: Context) -> None:
 
             def shutdown_repeatedly() -> None:
                 from contextlib import suppress
+
                 for _j in range(50):
                     if client.state not in ("running",):
                         break