Empty chip in some cases on price page

The empty chip is there because there's no brand and we get an empty string as brand. A solution would be not to display product price chip if the text is empty. Another solution would be to display something more interesting, cf. the web app, and even to let the user set the brand (and the quantity) at the OFF level (though this would be a frustrating experience because OFF would be updated but not Prices).

cf. https://prices.openfoodfacts.org/app/products/26014586: there's no brand and no weight.

cf. https://prices.openfoodfacts.org/api/v1/prices?product_code=26014586: brands is not null, but empty

{
  "items": [
    {
      "product_code": "26014586",
      "product_name": null,
      "category_tag": null,
      "labels_tags": null,
      "origins_tags": null,
      "price": 2.59,
      "price_is_discounted": false,
      "price_without_discount": null,
      "price_per": null,
      "currency": "EUR",
      "location_osm_id": 1793355690,
      "location_osm_type": "NODE",
      "date": "2024-06-17",
      "proof_id": 7407,
      "id": 28564,
      "product_id": 229240,
      "location_id": 27,
      "owner": "teolemon",
      "created": "2024-06-17T18:22:57.206315Z",
      "product": {
        "code": "26014586",
        "price_count": 1,
        "id": 229240,
        "source": "off",
        "product_name": "Wraps jambon brebis",
        "product_quantity": null,
        "product_quantity_unit": null,
        "categories_tags": [
          "en:sandwiches",
          "en:wraps"
        ],
        "brands": "",
        "brands_tags": [],
        "labels_tags": [],
        "image_url": "https://images.openfoodfacts.org/images/products/26014586/front_fr.34.400.jpg",
        "nutriscore_grade": "c",
        "ecoscore_grade": "unknown",
        "nova_group": 4,
        "unique_scans_n": 4,
        "created": "2024-01-11T06:06:12.090492Z",
        "updated": "2024-06-19T09:07:58.803380Z"
      },
      "proof": {
        "id": 7407,
        "file_path": "0008/bD5KabVSs7.jpg",
        "mimetype": "image/jpeg",
        "type": "RECEIPT",
        "price_count": 13,
        "owner": "teolemon",
        "created": "2024-06-17T18:22:56.973793Z"
      },
      "location": {
        "osm_id": 1793355690,
        "osm_type": "NODE",
        "price_count": 91,
        "id": 27,
        "osm_name": "ALDI",
        "osm_display_name": "ALDI, 86, Rue Édouard Vaillant, Levallois-Perret, Nanterre, Hauts-de-Seine, Île-de-France, France métropolitaine, 92300, France",
        "osm_tag_key": "shop",
        "osm_tag_value": "supermarket",
        "osm_address_postcode": "92300",
        "osm_address_city": "Levallois-Perret",
        "osm_address_country": "France",
        "osm_address_country_code": "FR",
        "osm_lat": 48.8974057,
        "osm_lon": 2.2880062,
        "created": "2024-01-05T19:04:53.408696Z",
        "updated": "2024-06-17T18:22:59.149421Z"
      }
    }
  ],
  "total": 1,
  "page": 1,
  "size": 50,
  "pages": 1
}

openfoodfacts / smooth-app

Empty chip in some cases on price page #5437

Problem