Event dispatchers show replication settings but don't support replication

We should ideally hide the setting, but at the very least we can make it a warning if you check it indicating it's not gonna do anything.

[Link Removed]

1. Create an actor blueprint
2. Add an Event Dispatcher in the "My Blueprint" window
3. Select it, and look at the details panel

Result: You can edit the "Replication" properties, even though event dispatchers do not support replication.

Expected: The replication options are greyed out and cannot be changed, with tooltip that says "Event dispatchers don't support replication" or something like that