EventDispatcherInterface service declaration breaks dependency injection

[VincentChalnot]

process-bundle/src/Resources/config/services/event.yaml

Line 2 in a8e280e

Symfony\Contracts\EventDispatcher\EventDispatcherInterface:

There is no reason to re-declare this service, it already exists when requiring symfony/event-dispatcher.

[njoubert-cleverage]

Fixed it on future v4.0 version.