[Messenger] Use `TransportMessageIdStamp` in `InMemoryTransport` allows retrying#43096

nicolas-grekas merged 1 commit intosymfony:4.4symfony/symfony:4.4from

alexndlm:feature/allow-retrying-for-in-memory-transportalexndlm/symfony:feature/allow-retrying-for-in-memory-transportCopy head branch name to clipboard