Blender Git Loki

Fix T71844: Outliner: show_active doesn't expand armature to show active bone

Since rB6bc6d016c5e7, outliner was not opening back up from the found
active element (but only its ID instead -- all occurances of this ID in
any collection).

Now expand from the active element as well (but only do this for the
first occurance of the corresponding ID)

Maniphest Tasks: T71844

Differential Revision: https://developer.blender.org/D6329