Shopper: Missing per-action authorization on PaymentMethods, Currencies and Carriers admin tables

Shopper is a Headless e-commerce Admin Panel. Prior to 2.8.0, the admin tables for PaymentMethods, Currencies and Carriers exposed inline toggles and per-record actions (enable, disable, edit, delete) that were rendered for any authenticated panel user without checking the corresponding per-action permission. A low-privilege user could disable every payment method on the store, disable or alter the default currency, or disable carriers. The impact is a full denial of checkout and pricing integrity loss, reachable by any authenticated user. This vulnerability is fixed in 2.8.0.