Merge pull request #54359 from nextcloud/backport/53528/stable31

[stable31] fix(maintenance): refresh page when turned off (sometimes)

Author: joshtrichards

lib/base.php

@@ -246,6 +246,7 @@ public static function checkMaintenanceMode(\OC\SystemConfig $systemConfig): voi
 			// render error page
 			$template = new OC_Template('', 'update.user', 'guest');
 			\OCP\Util::addScript('core', 'maintenance');
+			\OCP\Util::addScript('core', 'common');
 			\OCP\Util::addStyle('core', 'guest');
 			$template->printPage();
 			die();