[Messenger] "reset_on_message" location is inconsistent

[benr77]

https://symfony.com/doc/current/messenger.html#stateless-worker

The reset_on_message key is in different locations for YAML, XML and PHP.

YAML example has the reset_on_message key under the messenger key

XML example has the reset_on_message attribute on the child <framework:transport> element, and not the parent <framework:messenger>

PHP example has the reset_on_message method on the TransportConfig config helper, not on the parent MessengerConfig.

The PHP example, at least on Symfony 5.4, should be as follows in order to work correctly.

$messenger = $framework->messenger();

$messenger->resetOnMessage(true);