Hello, it seems like starting from iOS 18.0, it is possible to entirely skip the notifications permission request alert by swiping up from the bottom of the screen. It doesn't work this way with any other kinds of system alerts, nor in iOS 17.4 (tested it in the Simulator though).
So, is it a bug? Or is it intended? Either way, I haven't found any information regarding that.
The problem with that is when you skip the alert, notifications are missing from the app preferences.