[Issue] MFTF: Share wishlist with not valid email address

This issue is automatically created based on existing pull request: #28330: MFTF: Share wishlist with not valid email address

---

This PR contains MFTF test for Customer's WishList sharing with not valid email addresses.
PR contains refactoring of existed test for wishlist sharing (StorefrontShareWishlistEntityTest)
Deprecated StorefrontCustomerShareWishlistActionGroup due to hardcoded WishList Data Using.
Announced new StorefrontShareCustomerWishlistActionGroup due to best practices.

Preconditions (*)

Steps to reproduce (*)

1 - Login as a Customer
2 - Add product into WishList
3 - Fill in share info emails with invalid emails
4 - Click the "Share WishList" button
5 - Perform Assertions

Expected result (*)

1. [Screenshots, logs or description]

Actual result (*)

1. [Screenshots, logs or description]

✅ Confirmed by @engcom-Alfa
Thank you for verifying the issue! 👍 Your confirmation will help us to acknowledge and process this report.