The current third playtime bullet for Task J I18n is no longer relevant:

Translate the Order::PAYMENT_TYPES shown in the drop-down. You’ll need to
keep the option value (which is sent to the server) the same. Change only
what’s displayed.

The select options are translated during the main content of the chapter, and the Order::PAYMENT_TYPES constant no longer exists in the code or elsewhere in the book. This dates back to at least the Rails 6 version of the book. (In 6 it was using React and translating in the React component for the select options. Similar to 8, the version for 6 is using an enum declaration instead of a constant).