Mark support ticket install complete after post-go-live task

Post-go-live checklist completions don't update support tickets, leaving agents unsure and creating manual follow-ups. The ticket is marked install complete so support and ops can close items same day.

Overview

When a post-go-live checklist is completed, this flow ensures the corresponding support ticket reflects install completion so agents stop chasing status. That eliminates manual handoffs and lets support and operations close follow-ups the same day.