Blender Git Commit Log

Fix T64430: Removing objects from sub-collection doesn't update instances of parent collection.

Collections are a tad annoying with all their caching of objects... When
we modify content of a children collection, we need to tag DeG for CoW
update of all of the ancestors.

For now keeping that recursive tagging helper private, but would not be
surprised if we found more similar cases and needed to expose it to more
code...