Currently we don't show parenting hierarchy in the outliner when in the view layer view. The reason is that children may be in different collections, which makes things confusing.
- If parent and child is in the same collection we just show the hierarchy as usual.
- If a parent has children that are not in the same collection, they are shown below but greyed out and not showing restriction icons toggles. A tooltip can explain the meaning of this.
- The child still appears in the collection it is part of without the parent.