Better error messages for file actions failures

⚠️ 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 _(I've searched it)_. • Nextcloud Server is up to date. See [Maintenance and Release Schedule]( for supported versions. • Nextcloud Server is running on 64bit capable CPU, PHP and OS. • I agree to follow Nextcloud's [Code of Conduct]( Bug description File actions via the Webinterface such as delete or move, have a chance of failing. A popup will appear saying 'Error deleting file "Test".' or 'Could not move "Test"' The nextcloud log does not log anything when this happens. The webserver log does provide a hint with: "PUT /remote.php/webdav/sdufghiusdhgu/file5293.txt HTTP/2.0" 201 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36 Ed…