bug#46225: 27.1; In Drafts cursor is on first article, backwards from other groups

[積丹尼 Dan Jacobson]

LI> all articles in the group are permanently unread.

Yes, but initial cursor position needs to be not hardwired to that!!

OK, so there are several workarounds:

Here is the effect I want to achieve:

It is just like, with the cursor on the drafts group, doing:

 g                       ;; gnus-group-get-new-news
 <return>                ;; gnus-group-select-group
 <end>                   ;; end-of-buffer
 q                       ;; gnus-summary-exit
 <return>                ;; gnus-group-select-group

Now our cursor is nicely centered on the last article, just like in all
our other groups.

OK, there is no drafts related hook. So using one of gnus-*-hook
we need to implant that last article number into gnus' concept of where
we were reading, but only after a gnus-group-get-new-news command, and
only for the drafts group.