bug: Missing model download buttons do nothing

### 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

1. When you open a template that contains missing models and you open the "errors panel", clicking on the "Download All" button should download all missing models in the list.

2. When you open a template that contains missing models and you open the "errors panel", clicking on the individual "Download" button should download the missing model next to it.

### Actual Behavior

1. When you open a template that contains missing models and you open the "errors panel", clicking on the "Download All" does absolutely nothing. You can click it as many times as you want, nothing happens.

2. When you open a template that contains missing models and you open the "errors panel", clicking on the individual "Download" does absolutely nothing. You can click it as many times as you want, nothing happens.

### Steps to Reproduce

1. Either install ComfyUI fresh with no models or uninstall and reinstall so you have a fresh copy.
2. Open a template (in my case z-image-turbo text to image)
3. Click either "see errors" or the red error with an ! on the first node to open the errors panel
4. Click Download All (notice nothing happens)
5. Click the individual download button next to each missing model (notice nothing happens)

[logs.zip](https://github.com/user-attachments/files/26855826/logs.zip)

### Debug Logs

```powershell
See the attached log files zip.
```

### Other

_No response_