Workflow (GitHub) to check for translation errors

[nfebe]

Follow up from #40825

Original comment from @szaimen

Makes sense. Could we somehow add a workflow that checks this? I saw this happening quite often in the past...

[nickvergessen]

Could be added into https://github.com/nextcloud/server/blob/a33310f1b13b64fa5c88b4d5f2ecbf3d9d3bb569/build/translation-checker.php