KIP-633 — Deprecate 24-hour Default Grace Period for Windowed Operations in Streams

Accepted Kafka 3.0 Streams

KIP-633 deprecates the 24-hour default grace period for windowed operations (window aggregates, stream-stream joins) by removing APIs that silently apply it and replacing them with two explicit factory methods: one requiring a grace period parameter and one named `WithNoGrace()` that applies a grace period of zero. The 24-hour default caused results to be suppressed for up to 24 hours, which is almost always wrong for production use cases and caused widespread confusion among Streams users.

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