Blender Git Loki

Revert "Asset Browser: Ensure parent catalogs are expanded when adding child"

This reverts commit 487faed6d0a1170a2f098552f794280fabe82186.

I changed my mind on how to implement this feature. Adding a catalog
should also activate it, like we do it for adding other data in Blender.
The activation will automatically make it visible then. See the
following commit.