cd9bdc7399
OFS-20798 is a Task (child of OFS-20795 Epic), so tests nested under it must be Sub-tasks, not Tasks — Task cannot parent Task. Logic: - parent_ticket_override (campaign) → Sub-task (unchanged) - standalone_parent configured and differs from general parent → Sub-task - only general parent (Epic) → Task This fixes 'Please select valid parent issue' for standalone tests.