Replace t() calls in classes

Hello Maintainers and everyone,
I have provided a patch to fix this issue.
Please review it.

Thanks!

I Hello, I reviewed the patch #2
by running
phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml,twig achievements /

was able to reproduce the errors and after applying patch It does resolve all the issues with t() but there are still a lot of errors apart from t().

Automatically closed - issue fixed for 2 weeks with no activity.