Admin audit: Log content of deleted folder

⚠️ 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 When deleting a folder containing many files via the Nextcloud UI, the Admin Audit log (admin_audit) logs only a single DELETE action for the folder itself, and does not log DELETE actions for the contained files. However, deleting the same files individually generates one DELETE entry per file as expected. This makes it impossible to reliably monitor or alert on mass deletions using admin_audit, since large folder deletions are undercounted dramatically (e.g. deleting a folder containing 500 files produces only 1 DELETE log entry). This was reproduced on Nextclo…