This will allow to expose all those advanced features of the WM operators to other parts of the code, like the python library context manager, copy/paste code, etc. This is expected to be a strictly no-behavioral-change commit. Part of T91414: Unify link/append between WM operators and BPY context manager API, and cleanup usages of `BKE_library_make_local`. Maniphest Tasks: T91414 Differential Revision: https://developer.blender.org/D13222