Translations not scanned anymore when migrating to `phpmyadmin/twig-i18n-extension`

[devnix]

Hi! I've succesfully migrated from Twig 2 to Twig 3 while keeping my legacy gettext translations thanks to https://github.com/phpmyadmin/twig-i18n-extension, but it seems like this library will not scan them.

Would it be hard to make it work? I see that there's a similar TODO for Symfony's trans filter, so I guess it's a similar issue.