Checkpoint 加载加载器

### 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

页面太小无法加载

### Actual Behavior

不能正常运行

### Steps to Reproduce

页面太小无法完成操作

### Debug Logs

```powershell
os error 1455
```

### Other

_No response_