Optimize weak events in WPF

[HavenDV]

The Generic weak event manager is now used for all weak events in WPF. Ideally, we need to define cases where it is possible to use optimized specialized event managers.
https://learn.microsoft.com/en-us/dotnet/desktop/wpf/events/weak-event-patterns?view=netdesktop-6.0#how-to-implement-the-weak-event-pattern

[znakeeye]

WeakEventManager has horrible memory characteristics. It is totally banned in our super large WPF project. I wouldn't bother spending time on this feature.