[Api2] [Catalog] Product URL returned by REST Api is wrong store

[Hanmac]

Preconditions (*)

1. 19.4.15 to 20.12+
2. Mage_Api2 enabled

Steps to reproduce (*)

1. Enable Guest in REST API2 and the Attribute that they can receive Product URL

Expected result (*)

1. [Screenshots, logs or description]
2. Correct URL

Actual result (*)

1. [Screenshots, logs or description]
2. Wrong Store

My Test URL
https://myserver/api/rest/products/sku?store=5

The JSON output:

{
  "entity_id": 1343,
  "type_id": "simple",
  "url": "https:\/\/myserver\/index.php\/admin\/catalog\/product\/view\/id\/1343\/"
}

see that it is returning admin because it ignores the store parameter or getDefaultStoreView
(it even ignores the adminhtml router in local.xml, but that is a different thing)

The problem is this piece:

magento-lts/app/code/core/Mage/Catalog/Model/Api2/Product/Rest.php

Line 121 in fc9a8ca

$productData['url'] = $productHelper->getProductUrl($product->getId());

a few lines above, the WebsiteId is set from the store I used as parameter:

magento-lts/app/code/core/Mage/Catalog/Model/Api2/Product/Rest.php

Line 106 in fc9a8ca

$product->setWebsiteId($this->_getStore()->getWebsiteId());

changing it to this solves the issue:

$productData['url'] = $product->getProductUrl();

@sreichel if you want, I can make an MR soon.