Rules module break webtesting for all even when not installed.

This is a simple fix

I do not have the rules module enabled.. but it breaks my work on another module because all test directories are scanned.

here is the step to reproduce.

drush en simpletest --- enable testing
visit admin/config/development/testing

BOOM WSOD!!!

here is the error message

Drupal\simpletest\Exception\MissingGroupException: Missing @group annotation in Drupal\Tests\rules\Kernel\RulesUiEmbedTest in Drupal\simpletest\TestDiscovery::getTestInfo() (line 329 of core/modules/simpletest/src/TestDiscovery.php).

Anyway the solution is obvious. I hope this helps