Notification groups with empty summary title should still show preview

When a favorited app groups notifications, Niagara shows the group's summary title as a preview on the home screen. But some apps leave the summary title blank. Niagara then shows a dot but no preview at all. If the notification group's summary title is blank, it'd be great if Niagara still showed a preview, such as the first notifications title plus “… and 2 more", or even just “3 grouped notifications”.