Bug: C-c C-k show branches also expands archived headings [9.3.1 (9.3.1-elpaplus @ /home/ionasal/.emacs.d/elpa/org-plus-contrib-20191226/)]

[Allen Li]

The command org-kill-note-or-show-branches bound to C-c C-k when used to
show branches also expands headings tagged with :ARCHIVE:.  This is
contrary to expectations, as the manual states:

‘C-c C-k’ (‘outline-show-branches’)
     Expose all the headings of the subtree, CONTENTS view for just one
     subtree.

CONTENTS view when using TAB cycling does not expand archived headings.

Can be reproduced with a .org file containing:

* Foo
** Bar :ARCHIVE:
*** Baz

Emacs  : GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.10)
 of 2019-08-29
Package: Org mode version 9.3.1 (9.3.1-elpaplus @ 
/home/ionasal/.emacs.d/elpa/org-plus-contrib-20191226/)