KIP-1020 — Move `window.size.ms` and `windowed.inner.class.serde` from `StreamsConfig` to TimeWindowedDe/Serializer and SessionWindowedDe/Serializer class

Accepted Kafka 4.1 Streams

Deprecates window.size.ms and windowed.inner.class.serde in StreamsConfig and moves them as constants to the relevant windowed serializer/deserializer classes (TimeWindowedSerializer, TimeWindowedDeserializer, SessionWindowedSerializer, SessionWindowedDeserializer). These configs are not true Streams runtime configs—they only affect console consumer/producer deserialization—and their presence in StreamsConfig causes confusion for application developers.

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