Can't Get Web Extensions to work /ComfyUI/web/extensions/

### Custom Node Testing

- [ ] 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

There is a folder **/ComfyUI/web/extensions/**

The extensions should reside there.

### Actual Behavior

I'm having trouble loading anything from there and am confused, as people put the extensions into custom_nodes folder, instead of putting them there... Like @ltdrdata did with ComfyUI-Manager

### Steps to Reproduce

I'm just trying to output the {nodes,links} into browser console via _window_ object:

[copy_paste.js](https://github.com/user-attachments/files/22228270/copy_paste.js)

But I did fail tying to install just any 3rd party Extension there...

### Debug Logs

```powershell
There is just no logs about loading the scripts from /ComfyUI/web/extensions/ - like if they were never loaded... The only thing that is being linked on boot is /ComfyUI/web/extensions/comfyui.log
```

### Other

Now can someone tell me - **where is the actual code, that loads extensions

/ComfyUI/web/extensions/ ?**