v7.4.21

Changelog (v7.4.20...v7.4.21)

• bug #66885 Fix PhpSerializer::getMessageType() when a stamp holds the message (@lyrixx)
• bug #66541 Fix losing delayed messages when retrying the message that dispatched them (@nicolas-grekas)
• minor #66516 Recommend not decoding non-sendable stamps in SerializerInterface::decode() (@nicolas-grekas)
• bug #66509 Reject decoded messages that carry non-sendable stamps and validate the stamps of unserialized envelopes (@nicolas-grekas)
• bug #66497 Fix skipping a message that has no original transport in messenger:failed:retry (@nicolas-grekas)
• bug #66496 Fix moving a message between transports that use different serialization formats (@nicolas-grekas)
• bug #66480 Fix decoding a ValidationStamp that holds a GroupSequence (@nicolas-grekas)
• bug #66478 Fix recognizing a repeated error when its code does not keep its type in XML (@nicolas-grekas)
• bug #66479 Fix decoding in XML a ValidationStamp that has one group or none (@nicolas-grekas)
• bug #66473 Fix decoding in XML an ErrorDetailsStamp that has no FlattenException (@nicolas-grekas)
• bug #66474 Turn any error thrown while decoding into a MessageDecodingFailedException (@nicolas-grekas)
• bug #66475 Don't send handler results to transports (@nicolas-grekas)
• bug #66463 Fix decoding ErrorDetailsStamp with the XML format (@nicolas-grekas)
• bug #66453 Fix workers stopping on messages that fail signature verification (@nicolas-grekas)
• bug #66455 Fix decoding ErrorDetailsStamp with Serializer::create() (@nicolas-grekas)