Open Editors: selection not updated when changing editors

[bpasero]

Testing #41084

Steps:

• open a couple of files
• click on the first file in "open editors" view
• click on another file using the editor tabs

=> the open editors view looks like this now:

@isidorn could be that I broke this too

[isidorn]

Now when the active editor changes both the focus and the selection change in the list.
I proabaably broke this before because I was listeing on selection changes and did not want to react on this automatic setting of selection. However now you changed the open editors to react onOpen which does not get triggered when selection is programaticaly updated. So all works fine

[bpasero]

@isidorn should we do the same in the files explorer to be consistent?

[isidorn]

@bpasero we already do this in the files explorer, so we are conistent

[bpasero]

@isidorn not for me:

[isidorn]

@bpasero you are correct, I have pushed 5921728 to address this

[bpasero]

@isidorn thanks