Release v16.34.3

Fixed

• The kernel logs SkippingIncompleteConcurrencyScope at Debug instead of Warning. With CheckFirstAppendIntoAScope off — the shipped default — every first append into a new event source skips the check by design, so an application creating many event sources flooded the log with warnings; a caller that opts into the check sends an expectation the kernel validates rather than skips, so the skipped case never signals a check the caller asked for, and the append result keeps reporting the check as not performed (#3724)

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