The JS SDK of the Intercom Messenger in browsers can accept listeners with `onUnreadCountChange`, which could be used to reproduce the "red dot" on custom launchers.
However, since the release of newsfeeds and news items, Intercom Messenger also displays the red dot when there are unread news items. This data cannot be obtained through the SDK not the API, which means that custom launchers cannot reproduce the red dot anymore.
This can be fixed by adding the operation `onUnreadNewsItemsCountChange`, which would behave like `onUnreadCountChange` but for news items instead of messages.
