Fix Connection:nack method signature to match the one in 5.10 and 7.0+

Fix Connection:nack method signature to match the one in 5.10 and 7.0+. This is to avoid the following issue in MessageBusBundle:

Jun-2025 00:37:11 | Fatal error: Declaration of Ecentria\MessageBusBundle\Messenger\Transport\Amqp\ConnectionDecorator::nack(AMQPEnvelope $message, 
string $queueName, int $flags = AMQP_NOPARAM): bool must be compatible with Symfony\Component\Messenger\Bridge\Amqp\Transport\Connection::nack(AMQPEnvelope $message, string $queueName, 
int $flags = AMQP_NOPARAM): void in /home/mbuser/app/src/Messenger/Transport/Amqp/ConnectionDecorator.php on line 85

v6.10

ARCH-414 Fix the class name

ARCH-414 Blocking consumer and multiple bindings

Full Changelog: v5.4.44...v5.10