Show the blacklisted terms that are substrings of the password

Here the placeholder doesn't match:

          $validation->setErrorMessage($this->t('The password "@password" is not allowed. Please choose a different password.', [
            '@term' => $blacklisted_password
          ]));

That's the only problem I found. I reviewed the code and tested:

• Enabling show_blacklisted_term on an existing constraint with match_substrings
• Enabling show_blacklisted_term on a new constraint without match_substrings
• Disabling show_blacklisted_term on the previous constraint

I appreciate the improved wording in the error messages.