[optimization] Increase Moonvalley polling timeout to 64 minutes

- Changed poll interval from 5s to 16s to reduce API calls
- Maintains 240 max attempts for 64 minute total timeout
- Helps prevent timeouts for slow Moonvalley video processing

comfy_api_nodes/nodes_moonvalley.py

@@ -98,7 +98,8 @@ def poll_until_finished(
         completed_statuses=[
             "completed",
         ],
-        max_poll_attempts=240,
+        max_poll_attempts=240,  # 64 minutes with 16s interval
+        poll_interval=16.0,
         failed_statuses=["error"],
         status_extractor=lambda response: (
             response.status