Automatically Descope Parent Deliverables (L4) When All Child Tasks (L5/L6) Are Removed by Domain Filtering

Currently, when a user deselects a "Domain" during the scoping process, the system correctly filters out the associated child Tasks (L5) and Sub-tasks (L6). However, the parent Deliverable (L4) remains in the scope, even if it has no remaining children. This creates "empty" parent deliverables that the user must then manually find and delete. This negatively impacts usability and counteracts the primary benefit of the domain filtering feature, which is to allow teams to easily and accurately tailor their scope.