ScreenViewEventTracker
class ScreenViewEventTracker(event: ScreenViewEvent, mixpanel: MixpanelAPI) : MixpanelEventTracker(source)
Tracks event as a screen_view event, with its name as screen_name: the names GA4 uses, since Mixpanel has none of its own.
Throws an IllegalArgumentException if the event has its own screen_name parameter, because it would replace the screen's name.