Silent Notifications use wrong channel type

The silent notifications use the notification channel type that is intended to be used for calls (I don't know the name of it), while the noisy notifications correctly use the channel type intended for messages. The difference is that the sound options offered to the user differ between repeating ringtones, which is definitely not wanted for silent notifications, and one-off notification sounds, which is more appropriate for both silent (depending on user preference) and noisy notifications.