8a778f4f5b
Round-robin queue resets now leave the Redis queue empty when an inbox has no members, avoiding an invalid sorted-set write while keeping normal queue population unchanged. ## Closes - [CW-7922](https://linear.app/chatwoot/issue/CW-7922/harden-backend-paths-causing-production-sentry-errors) - [Sentry 7663380084](https://chatwoot-p3.sentry.io/issues/7663380084/) ## How to reproduce Run round-robin assignment for an inbox with no inbox members. Resetting the queue previously attempted a Redis sorted-set write without any member/score pairs. ## What changed - Clear the existing queue as before. - Skip queue population when there are no eligible user IDs. - Add service coverage for an inbox with no members.