Website Event Sale: Cart Quantity Readonly

This module changes how event tickets behave in the website shopping cart. Normally, the cart shows a small quantity box next to each line so the customer can increase or decrease how many items they are buying. For event tickets, that box is now hidden.

• The change only affects event ticket lines in the cart; other products keep their normal quantity selector.
• Because the quantity cannot be edited, a customer who wants a different number of tickets has to remove the line and add new registrations from the event page.
• The module works by modifying the existing cart line display template (website_sale.cart_lines), so it appears directly on the website cart screen.

It does not add any new menu, model, button, report, or automated rule. It only adjusts the visibility of the quantity control for event lines. No new database fields or scheduled actions are introduced. The module depends on website_event_sale, which provides the event ticket selling features on the website.