test(theming): Fix broken footer links tests

[provokateurin]

Summary

#46784 was merged with red CI and related failures: https://github.com/nextcloud/server/actions/runs/10124170988/job/27998484918?pr=46784

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[skjnldsv]

Ooops 😅