[php-src] Issue #12969: Unable to check PDO::ATTR_STRINGIFY_FETCHES configuration

Issue: https://github.com/php/php-src/issues/12969 Author: janedbal ### Description The following code: ```php <?php $pdo = new PDO('mysql:host=mysql;port=3306', 'root', 'secret'); var_dump( $pdo->getAttribute(PDO::ATTR_STRINGIFY_FETCHES) ); ``` Resulted in this output: ``` Fatal error: Uncaught PDOException: SQLSTATE[IM001]: Driver does not support this function: driver does not support that attribute in /app/pdo.php on line 3 ``` But I expected this output instead: ``` int(0); ``` It seems like **I cannot verify how PDO is configured regarding this option**. When $pdo->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, true) is used, true is returned and the behaviour changes. This behaviour applies for at least mysql, pgsql and sqlite. Full dockerized replication repository: https://github.com/janedbal/php-pdo-get-attribute-bug ### PHP Version PHP 8.3.0 ### Operating System _No response_