PHP 8.3 compatibility error 'ConfigureStyles' form

Related to: https://www.php.net/manual/en/migration82.deprecated.php#migration82.dep...

Working on it

This was happening because $classResolver wasn’t declared as a property before being assigned in the constructor. I’ve added the missing property declaration to fix it properly.
Please review!!

Thanks! local test given my same steps now have no error!

Thanks everyone!