For out of stock notifications, does this product work with configurable products in Magento?  An example is when a configurable has three simple products and one of the simple products is out of stock.  The way it is with Magento 2.4 is that if a customer selects that configurable product only the two that are in stock will show.  The one that is out of stock will not show, so how does a customer ask for an alert when there would seem to be no prompt to do so?