This PRfixes#43496

When a message is sent for retry, we currently serialize it from the message POPO object whereas we already had the serialized representation of the message before deserializing it.

This solution proposes to store the serialized message in a "not serializable" stamp when we receive the message. Then the serialized message will be used in\Symfony\Component\Messenger\Transport\Serialization\Serializer::encode(), if the message is retried, which prevents to serialize the message again.

This has several advantages, mainly when we're dealing with big payloads:

• it prevents the performance impact of serializing potential big objects
• it prevents the need of a dedicated normalizer if the message comes from another system.