Fix tests relating to GeoJson / MongoDB driver

This commit fixes the following errors that were showing up when running the ResourceBundle tests without any other Sylius repositories.

Fixed tests:
        Sylius/Bundle/ResourceBundle/Doctrine/ODM/MongoDB/DocumentRepository
  41  ! is initializable
        exception [exc:ReflectionException("Class GeoJson\Geometry\Geometry does not exist")] has been thrown.

        Sylius/Bundle/ResourceBundle/Doctrine/ODM/MongoDB/DocumentRepository
  46  ! implements Sylius repository interface
        exception [exc:ReflectionException("Class GeoJson\Geometry\Geometry does not exist")] has been thrown.

        Sylius/Bundle/ResourceBundle/Doctrine/ODM/MongoDB/DocumentRepository
  51  ! creates Pagerfanta paginator
        exception [exc:ReflectionException("Class GeoJson\Geometry\Geometry does not exist")] has been thrown.