NorskManager.notifyMigrationCutoverApply() method
Tell the target worker "the source stopped output at payload; begin output from there". payload is the source’s own, relayed opaque. The target answers with MigrationTargetAppliedEvent.
Signature:
notifyMigrationCutoverApply(targetJobKey: ActiveJobKey, migrationId: string, payload: Uint8Array): Promise<void>;