Remove "type" parameter from Notifications

[Montoya]

In Extension v12 the type parameter is no longer used. Notifications are automatically "inApp" and if the user has native notifications enabled too then they also come up as native. The parameter should be deprecated.

[FrederikBolding]

@Montoya This does not seem accurate. When testing current develop, there is still a distinction between in-app and native notifications. How are in-app notifications surfaced as native?

[Montoya]

@FrederikBolding you are correct, the existing functionality has not changed.