[stable30] fix(user_status): add link to Availability page if user set predefined 'Vacationing'

[backportbot[bot]]

Backport of #47448

Warning, This backport's changes differ from the original and might be incomplete ⚠️

Todo

• [ ] Review and resolve any conflicts

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[nickvergessen]

/compile /

[nickvergessen]

But translation freeze :speak_no_evil: