Blender Git Loki

Outliner parenting hierarchy: Sort for children when not a-z sorting

We always keep the children that are not in a collection listed in the
end of the children list due to design. This way we can visually draw
them with dashed vertical lines.

This was already working for alphabetical sorting, however whenever
sorting was disabled, we would end up with a list of children ordered
regardless of their state (whether the child itself is in the collection).