NODE_CLASS_MAPPINGS["UpscaleModelLoader"] Not works any more! WTF????

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

Works ok to 0.3.29, after that broke everythink

### Actual Behavior

Not work any more

### Steps to Reproduce

upscalemodelloader = NODE_CLASS_MAPPINGS["UpscaleModelLoader"]()

### Debug Logs

```powershell
KeyError
```

### Other

_No response_