Resolves https://github.com/spring-cloud/spring-cloud-stream/issues/2915
Running the Pulsar binder with Java 21 surfaced a bug where the layered
binder/binding config props are not properly applied to the targeted
consumer/producer builders.
The bug existed before Java 21 and is unrelated.
The binder/binding config props are converted to a Pulsar
ProducerConfigurationData object via Jackson. This conversion process iterates
over a map of config props. The iteration order of the map changed between Java
17 and 21. This results in object setters getting called in different orders,
which in turn causes cross-field validation errors.
See #2915 for more details
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