This module adds a new formatter for product variation fields, allowing you to easily include a "Add to Wishlist" button within your entity displays. This provides a convenient way for users to add products to their wishlists directly from content displays, even when using layout tools.
Module commerce wishlist not work with layout, so, we created a module that add help to add custom button, in entity display.
This module add new formatter "Commerce wishlist Button" for field product variation.