Extend the existing Advanced Product Catalog functionality

The existing Advanced Product Catalog should be extended to allow new added products and categories in the shop to be visible in the storefront but not purchasable by default (Not Show Add to Basket Button).

Only after explicitly adding them to the active B2B catalog should they become available for purchase. This enables merchants to showcase their full product range—e.g. for previews, B2B catalogs, or product teasers—without making new items immediately orderable. It supports better assortment planning, pre-marketing, and channel-specific catalog management.