[Bug]: User group dropdown limited to only 25 groups

⚠️ This issue respects the following points: ⚠️ • This is a bug, not a question or a configuration/webserver/proxy issue. • This issue is not already reported on [Github]( OR [Nextcloud Community Forum]( _(I've searched it)_. • Nextcloud Server is up to date. See [Maintenance and Release Schedule]( for supported versions. • I agree to follow Nextcloud's [Code of Conduct]( Bug description Whenever I try to add a user to a group on the accounts overview page, the output of the dropdown is limited to 25 groups. This is very annoying if you happen to have more than 25 groups that start with the same letters. This seems to have been limited in the request that the frontend sends to the backend (&limit=25). As this seems to be hardcoded, I'm opening a bug report. Steps to reproduce 1. Log in to Nextcloud as an admin 2. Head over to 'Accounts' in the top right corner 3. Go to any of the shown users and press 'Edit' (Pencil i…