Disable holidays consent signups

[dblatcher]

What does this change?

Prevents users for subscribing to the 'holidays' marketting email on the "/email-prefs" page, but still allow existing subscribers to unsubscribe:

• if the user was no subscribed when the page is populated, the whole consentPreference for 'holidays' is not rendered.
• If the user was subscribed, but then unsubscribes, the description & title remain in place, but the button or checkbox is removed.

How to test

How can we measure success?

Have we considered potential risks?

Images

Accessibility

• Tested with screen reader
• Navigable with keyboard
• Colour contrast passed
• The change doesn't use only colour to convey meaning