KIP-406 — GlobalStreamThread should honor custom offset policy.

Discussion Streams

Makes `GlobalStreamThread` automatically handle `InvalidOffsetException` by resetting offsets according to the application's `auto.offset.reset` policy and rebuilding the global state store, instead of propagating the exception to the user. Previously, receiving an `InvalidOffsetException` from global store topics required a manual application restart, whereas stream threads already handle this automatically.

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