Refactor KTable source optimization

Kafka Streams DSL offers an optimization to re-use an input topic as table changelog, in favor of creating a dedicated changelog topic.

So far, the Processor API did not support any such feature, and thus when the DSL compiles down into a Topology, we needed to access topology internal stuff to allow for this optimization.

With KIP-813 (merged for AK 3.8), we added `Topology#addReadOnlyStateStore` as public API, and thus we should refactor the DSL compilation code, to use this public API to build the `Topology` instead of internal APIs.