Change the way how translation is made

Thanks for your help!

Testing says that the patch failed to apply and I tried manually and it failed to apply, so marking as needs work.

Moving to needs work for the test fail.

+++ b/tests/src/Functional/EmailRegistrationTestCase.php
@@ -37,41 +38,41 @@ class EmailRegistrationTestCase extends BrowserTestBase {
+    $this->assertSession()->responseContains('Enter your email address.');
+    $this->assertSession()->responseContains('Email');
+    $this->assertSession()->responseNotContains('Email or username');

except this duplicated calls to assertSession() better use local var

The patch mixing "Link" as render object and string to use for translation - reverted.
Also a bit of clean-up

And the check should be against start theme, so better check for own error message

I gonna commit it and polish remains in #3037323: Remove usage of deprecated methods and functions

After deprecations new release is unlocked