Don't assume armature of active object is what is displayed in the properties editor, both in C++ and Python code.
Object pointer was left out from some notifiers, as this means only that object was changed. But an armature datablock can be shared by multiple objects.
Co-authored-by: Brecht Van Lommel <brecht@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/119663
cd476226d8