Range selection on code block works weirdly with vitepress-twoslash on Firefox

[sapphi-red]

Validations

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• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

Describe the bug

When trying to select a range that contains a hoverable element, the selected range changes unexpectedly on Firefox.

Reproduction

https://stackblitz.com/edit/vite-vabfyv?file=package.json&terminal=docs:dev

Contributes

• I am willing to submit a PR to fix this issue
• I am willing to submit a PR with failing tests