Add style to new_email_address_added_email notification

What does this MR do and why?

This MR fixes #417234. It adds style to new_email_address_added_email notification by replacing mail_with_locale method with email_with_layout

%{first_multiline_commit}

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before

After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.