maintenance:mode produces a warning despite --quiet #8399
Description
Steps to reproduce
$ php occ maintenance:mode --on --quiet$ php occ maintenance:mode --off --quiet
Expected behaviour
Maintenance mode is enabled and disabled. No output is produced unless a fatal error occurs.
Actual behaviour
$ php occ maintenance:mode --off --quiet
Nextcloud is in maintenance mode - no apps have been loaded
The message is printed regardless of --quiet and --no-warnings.
This seems like an easily reproducible issue, so I'll take the liberty of omitting further details about my setup.