Changeset 59592 for trunk/src/wp-includes/class-wp-phpmailer.php

I18N: Mail: Make PHPMailer messages translatable.

Adds a new WP_PHPMailer class to leverage the WordPress i18n system with PHPMailer, so that any user-visible error messages can be properly translated.

Props sukhendu2002, swissspidy, audrasjb, iandunn, nacin, mark-k.
Fixes #23311.