Allow hydrated instances to enter into the adapter

[DesignByOnyx]

This covers situations where a user might want to instantiate a model in the "before" phase of a service. This is useful if a user wants to trigger getters/setters/validations and/or using the hydrate hook in the "before" phase. There may be other use cases where a user instantiates an ORM model and it should not cause the service fail. Furthermore, the same exact model instance should be returned.