This issue is automatically created based on existing pull request: #33342: MFTF: Newsletter Subscription With Enabled Need To Confirm Config

This PR contains a MFTF test for checking newsletter subscription process with enabled "Need To Confirm" config.
Guests and customers should receive correct notifications.

Steps to reproduce
1 - Enable "Need To Confirm" config.
2 - Subscribe to newsletter as guest on storefront
3 - Login as customer
4 - Subscribe to newsletter as customer on storefront
5 - Perform assertions