i18n: Two identical variables will not work in many languages

[rakekniven]

registration/lib/Service/MailService.php

Line 160 in 18802e3

$subject = $l->t('New user "%s" has created an account on %s', [$username, $this->defaults->getName()]);

Please replace with variable 1 and 2 to allow correct translation for all languages.

[gokulbits]

Can I take on this issue?

[rakekniven]

Yes!

[rakekniven]

@gokulbits Will you take on?