Using block_class module with language module throws $string ("") must be a string

Problem/Motivation

When enabling block_class module, if the language module is already enabled and a new language installed (french in my case), drush outputs the message "In TranslatableMarkup.php line 132: $string ("") must be a string".

Version 2.0.0 does not produce this error.

The error message seems to be generated because the LocaleConfigManager.php (line 178) receives a boolean value to translate (instead of a string)

Some configuration info

• Drupal 9.4.5
• PHP 8.1
• Drush 11.1.1
• Install profile minimal
• Linux OS

Steps to reproduce

Drupal was installed with the following commands:

1. composer create-project drupal/recommended-project:^9 /var/www/html
2. composer require drush/drush
3. composer update
4. drush site:install minimal […]

Installing block_class was done with the following commands:

1. drush pm:enable language
2. drush language:add fr
3. composer require drupal/block_class:2.0.2
4. drush pm:enable block_class