Configurable "item not found image" with Returns Portal item selection for items that dont have image URL

Like to set their own “Image not found” image for Products in the Returns Portal. That way, If a Product is not sent to AfterShip with an Image URL, they have an image that looks more branded.

Today, when an item does have an img url, the Return Portal defaults to the missing image icon.

Request - have a function within Return Portal where if any items on my return portal dont have an image URL, it can set to a image that I select instead of defaulting to the standard broken/no image icon.