fix(gateway): timed-out turn abandonment is an explicit hard stop

_abandon_timed_out_gateway_turn landed on main (eb4772ec2) after this
PR's base and still used the soft interrupt(). Every other inactivity-
timeout surface in this change (cron, gateway executor poll, delegate
children) treats a timeout as an explicit stop that may cancel a
protected compression summary — widen the same fix to this sibling.

gateway/run.py

@@ -2780,9 +2780,9 @@ def _abandon_timed_out_gateway_turn(
         timeout_fired.set()
 
     agent = agent_holder[0] if agent_holder else None
-    if agent is not None and hasattr(agent, "interrupt"):
+    if agent is not None:
         try:
-            agent.interrupt(_INTERRUPT_REASON_TIMEOUT)
+            request_hard_interrupt(agent, _INTERRUPT_REASON_TIMEOUT)
         except Exception:
             logger.debug("Timed-out agent interrupt failed", exc_info=True)