Symfony Messenger: Async job serialization error

[francescobianco]

Labels: bug, symfony, async, serialization
Context: Symfony Messenger + Doctrine transport

Description:
When dispatching an async job that includes the Openapi client instance, serialization fails with:
Serialization of 'Openapi\Client\Api\CompanyApi' is not allowed.

Expected:
SDK client should be stateless and re-creatable from configuration, or marked as non-serializable.

Impact:
Breaks async pipelines and queued jobs using Openapi calls.