…ed with SyncTransport (Tobion)This PR was merged into the 4.3 branch.Discussion----------[Messenger] remove send_and_handle which can be achieved with SyncTransport| Q             | A| ------------- | ---| Branch?       | 4.3| Bug fix?      | no| New feature?  | yes/no <!-- please update src/**/CHANGELOG.md files -->| BC breaks?    | yes     <!-- seehttps://symfony.com/bc -->| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->| Fixed tickets || License       | MIT| Doc PR        |symfony/symfony-docs#11236The send_and_handle option is pretty awkward and we don't need it anymore because the same thing can be achieved with the SyncTransport from#30759So the following example from the doc inhttps://symfony.com/doc/current/messenger.html#routing```yamlframework:    messenger:        routing:            'My\Message\ThatIsGoingToBeSentAndHandledLocally':                 senders: [amqp]                 send_and_handle: true```is the same as```yamlframework:    messenger:        routing:            'My\Message\ThatIsGoingToBeSentAndHandledLocally':                 senders: [amqp, sync]```#31401 (review)Commits-------4552b7f [Messenger] remove send_and_handle option which can be achieved with SyncTransport