[FEATURE event-dispatcher-can-disable-event-manager] eventDispatcher can disable dispatching events to view `eventManager`

`eventDispatcher` can be configured to disable/enable the event dispatch to the view `eventManager`. 

Disabling `eventDispatcher.canDispatchToEventManager` will provide some performance benefit because it skips the search for the `eventManager` on the view tree.

Closes #4355
ohya, thanks.