Adding new event "BeforeEntityValidatedEvent" to dispatch before validation

[astronati]

Adding new event to dispatch before validation A new event called BeforeEntityValidatedEvent extending AbstractLifecycleEvent can be used to manipulate when needed the entity before executing the validation but having the chance to access the entityInstance already created by the controller

Example of how to use this feature _ class BeforeEntityValidatedEvent extends AbstractLifecycleEvent {}

public function new(AdminContext $context)
{
        // ...
        $entityInstance = $newForm->getData();
        $context->getEntity()->setInstance($entityInstance);

		// New code ---
        $event = new BeforeEntityValidatedEvent($entityInstance);
        $this->container->get('event_dispatcher')->dispatch($event);
        $entityInstance = $event->getEntityInstance();
        // ----

        if ($newForm->isSubmitted() && $newForm->isValid()) {
            $this->processUploadedFiles($newForm);

_