This will allow a multi-app application to listen to early events from different elements and place them
on a separate field on the window.
PR Close#55586
The change in the index is to allow the framework to add a type to the object that is passed from the contract to the dispatcher. ie
registerDispatcher(contract, (eventInfo: EventInfoWrapper) => ...).
The latter is to return the event contract so that tests can clean it up.
PR Close#55411
iteriani