Blender Git Commit Log

Fix T62570: Append Particles System not working properly.

T62570 and T61796 show that we need two slightly different behaviors in
post-linking collection process:
* For linking, we never want to instantiate indirectly-linked
collections or objects.
* For appending however, since all collections and objects will become
local and hence need instantiation, we want to 'link to scene' all
collections first, better than instantiating the objects in the master
collection opf current scene.