Notification is not closed when new message is read without clicking on notification

A notification for a new message is not closed when the message is read (i.e. the chat with the new message is opened) without clicking on the notification

Possible solution: Use a map (key: chatPartnerJid, value: list of notifications) and close all notifications from the same chatPartnerJid; Connect a signal from the normal notification closing by clicking on it to the closing via the map to clean the map.