New Order Notification Preview Test Products

Is there a way to change the products that display within the New Order Notification Preview specifically?

It used to show our own products but very recently it is now showing 2 fake products:

Aviator sunglasses
Acme
SKU: SKU2006-001

Mid-century lounger
Acme
SKU: SKU2006-020

Shopify must have replaced our own products with these products recently somehow but my question is can I change these back to our own products but just for the preview itself.

I want to be able to alter tags and metafields within the products themselves so that I can in turn have code within the New Order Notification that picks up on said tags and metafields. Being able to control the products helps with testing the code but not when the products are fake, Shopify-generated ones.

Any advice would be massively appreciated.