MDVA-33168: API async endpoint unsets special price

Create two websites with stores.

Go to Stores > Configurations > Catalog > Catalog > Price > Catalog and Set Price Scope = Website.

Create a text-type product attribute. Leave all the options to default.

Add the attribute created to the default attribute set.

Create a simple product to use with a bundle product.

Create a bundle product with the following Example options:

• Enable Product = Yes.
• Attribute Set = Default.
• Product Name = bundle-1.
• SKU = bundle-1.
• Dynamic SKU = Yes.
• Price = $100.00.
• Tax Class = Taxable Goods.
• Stock Status = In Stock.

Under Bundle Items, set these Example options:

• Ship Bundle Items = Together.
• Option Title = test, Input Type = Radio Buttons, Required checkbox = checked.
• Is Default checkbox = unchecked.
• Name = simple-100.
• SKU = simple-100.
• Price = 100.00.
• Price Type = Fixed.
• Default Quantity = 1.
• User Defined checkbox = unchecked.

Switch the scope to the non-default store, and set the special price. (Example: on the Advanced Pricing page, set Special Price = 4%, and Price View = Price Range.)

Update the new attribute only in the non-default store scope, like this Example:

    PUT {{base_url}}/rest/en_au/async/V1/products/{{sku}}    {        "product": {            "custom_attributes": [                {                    "attribute_code": "text_attr",                    "value": 21                                   }            ]                    }    }