Invalid change to group font size

### 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

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### Actual Behavior

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### Steps to Reproduce

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### Debug Logs

```powershell
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### Other

The report names no files, tests, or entry points and provides no actionable reproduction steps beyond an image. Start by reproducing the group font-size change in ComfyUI's interface; the intended font size and completion criteria are not specified in the issue.

Written by the indexing model from the issue text.