v1.39.0 - Image comparer node lacking polish

### 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?

New image comparer node looks broken when nothing is loaded / server is restarted with no images loaded
Missing polish

### Steps to Reproduce

1. yes
2.
3.

### How is this affecting you?

Visual/UI issue only

### ComfyUI Frontend Version

1.39.0

### Browser

Chrome/Chromium

### Console Errors

```javascript

```

### Logs

```shell

```

### Additional Context

_No response_

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-8387-v1-39-0-Image-comparer-node-lacking-polish-2f76d73d36508192bf38f7c6ec044884) by [Unito](https://www.unito.io)