Section translation supports linking to a specific section to translate (T260143). However, if we put a wrong section in the link, it kinda breaks sx (eternal loading of the section) but the user can always go back
https://sx.wmflabs.org/index.php/Special:ContentTranslation?page=Moon§ion=WRONGSECTION&from=en&to=es&sx=true#/sx
*what should be the correct behaviour in this case?*
We should avoid the dead-end:
- Check for the presence of such section in the article
- When the section does not exist, show the regular confirmation step (with article selected, but no specific section)
- Show a bubble notification with the message "Section "Wrongsection" not found in the article"