Fix deferred compaction replay

Author: seratch

src/agents/run.py

@@ -2071,8 +2071,10 @@ async def _save_result_to_session(
                     response_id,
                 )
                 return
-            if deferred_response_id and hasattr(session, "clear_deferred_compaction_response_id"):
-                session.clear_deferred_compaction_response_id()
+            if deferred_response_id:
+                await session.run_compaction({"response_id": deferred_response_id})
+                if hasattr(session, "clear_deferred_compaction_response_id"):
+                    session.clear_deferred_compaction_response_id()
             await session.run_compaction({"response_id": response_id})
 
     @staticmethod