**Backport:** https://codeberg.org/forgejo/forgejo/pulls/6853
- When you use a link in a heading such as `# [Text](link)` (instead of the conventional `# Text`) the TOC should only show `Text` and not `[Text](link)`.
- Use the `mdutil.Text` to only get the text from actual text nodes and not the text that was provided in the markdown input.
- Regression of e2fddcf681
- Resolvesforgejo/forgejo#6847
- Added integration test.
Co-authored-by: Gusted <postmaster@gusted.xyz>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6859
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>
Co-committed-by: forgejo-backport-action <forgejo-backport-action@noreply.codeberg.org>
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