[O] decimal hours for clocking

[Samuel Wales]

i used to be able to do (setq org-duration-format '(("h" . nil)
(special . 2)) to get decimal hours for clocking, like 43.22h meaning
43 hours and 22/60 minutes.

in recent org maint, this seems to show up like 2d 11:22.

perhaps user error?  what i really want is decimal hours for
org-clock-display, /but/ hh:mm for modeline clock display.  but i'm ok
with evaluating the above form when i need to do org-clock-display if
it is not possible to specify context.