Markdown Note node can't render local image files (Nodes 2.0)

### 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

Local images are rendered in the node. (see below)

### Actual Behavior

`````` works.
`````` with / or \ does not work for locally stored images.

Putting a image in ComfyUI's "input" folder, also does not work; displays a broken image icon.

### Steps to Reproduce

Download and install ComfyUI Portable v0.15.1.

Open a workflow, and add the Markdown note node.

Paste try and display a local image using the above Markdown text formatting.

### Debug Logs

```powershell
No relevant terminal log
```

### Other

_No response_