"Notification Center" is not registered on tvos
Even if you "get PendingNotificationRequests" after registering "Notification Center" on tvos, the value remains 0. No Error is issued when "add" is done, and the cause is unknown.
It is strange that information such as "title", "subtitle", and "body" cannot be registered in "Notification Content" in the first place.
If anyone knows how to deal with it, please do so.