CreateTopicsResponse returns only 4 configs instead of all

[weeco]

Version & Environment

Redpanda version: (use rpk version): v23.3.5

What went wrong?

CreateTopicsResponse v5+ is expected to return all the configs that apply to this specific topic. Redpanda only returns four configs. It's always the same four configs.

What should have happened instead?

Apache Kafka returns all Kafka topic configs:

How to reproduce the issue?

1. Send CreateTopicsRequest (v5+)
2. Look at response's configs property, it will report just 4 configs.

Additional information

I missed to point this out in #15722