v1.40.4 - Extension section broken

### Prerequisites

- [x] I am running the latest version of ComfyUI
- [x] I have custom nodes enabled

### What happened?

### Steps to Reproduce

1.
2.
3.

### How is this affecting you?

Crashes ComfyUI completely

### ComfyUI Frontend Version

1.40.4

### Browser

Chrome/Chromium

### Console Errors

```javascript

```

### Logs

```shell

```

### Additional Context

_No response_

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-8902-v1-40-4-Extension-section-broken-3096d73d365081ac9b53d3e38ea29e01) by [Unito](https://www.unito.io)