This PR resolves an error that occurs when the special_price and the retail_price or base price are the same.
Being the same, the special_price field is not added to extension_attributes.
On the other hand, Magento detects the special_price and returns it within the custom_attributes, regardless of whether to apply taxes. This causes doofeeds, trying to access the special_price and not finding it, to look in the custom_attributes and return the value without taxes.
To solve this problem, a function has been added to eliminate the custom_attributes related to the special_price.
This PR resolves an error that occurs when the special_price and the retail_price or base price are the same. Being the same, the special_price field is not added to extension_attributes. On the other hand, Magento detects the special_price and returns it within the custom_attributes, regardless of whether to apply taxes. This causes doofeeds, trying to access the special_price and not finding it, to look in the custom_attributes and return the value without taxes.![image](https://user-images.githubusercontent.com/1659534/201944775-e5ef1e7f-a947-4453-885d-71c59ac8fd85.png)
To solve this problem, a function has been added to eliminate the custom_attributes related to the special_price.
Related ticket: #82450