Subgraph input randomly connects to different widget

### Prerequisites

- [x] I am running the latest version of ComfyUI
- [x] I have searched existing issues to make sure this isn't a duplicate
- [x] I have tested with all custom nodes disabled ([see how](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled))

### What happened?

Subgraph input randomly connects to different widget in the backend not visually unless you click the subgraph widget.

### Steps to Reproduce

Can't find a pattern yet but it has happened so many times randomly and it does not make sense.

### How is this affecting you?

Crashes ComfyUI completely

### ComfyUI Frontend Version

1.25.11

### Browser

Firefox

### Console Errors

```javascript

```

### Logs

```shell

```

### Additional Context

How and why would the subgraph connect to different widget by itself? and not show the links? Also, I have never connected anything to that widget before
Actual Subgraph Connection:

What the subgraph widget actually show (downsampling_function widget menu)

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-5466-Subgraph-input-randomly-connects-to-different-widget-26a6d73d3650810a9086c00f2d9af354) by [Unito](https://www.unito.io)