KIP-943 — Add independent “offset.storage.segment.bytes” for connect-distributed.properties

Discussion Connect

Adds a dedicated `offset.storage.segment.bytes` configuration for Kafka Connect's offset storage internal topic, independent of the broker's global `segment.bytes`. At startup, Connect workers consume the entire offset storage topic from the earliest offset; with a large segment size (e.g., default 1 GB × 25 partitions = up to tens of GB of uncompacted active segments), startup time becomes prohibitively long.

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