fix(jsonld): various json streamer fixes

[soyuka]

Needs test:

<?php

namespace App\ApiResource;

use ApiPlatform\Metadata\ApiProperty;
use ApiPlatform\Metadata\Get;
use App\Entity\Product\Product as EntityProduct;
use App\State\GetProductBySlugProvider;
use Symfony\Component\ObjectMapper\Attribute\Map;

#[Get(
    types: ['https://schema.org/Product'],
    uriTemplate: '/products/{code}',
    uriVariables: ['code'],
    provider: GetProductBySlugProvider::class,
    // jsonStream: true
)]
class Product
{
    public string $id;
    #[ApiProperty(identifier: true)]
    public string $code;

    #[Map(source: 'averageRating', transform: [self::class, 'getAggregateRating'])]
    #[ApiProperty(genId: false, iris: ['https://schema.org/aggregateRating'])]
    public AggregateRating $aggregateRating;

    #[ApiProperty(property: 'name', iris: ['https://schema.org/name'])]
    public string $name;

    /**
     * @param EntityProduct $source
     */
    public static function getAggregateRating(mixed $value, object $source, ?object $target): AggregateRating
    {
        return new AggregateRating($value, \count($source->getReviews()));
    }
}