Resolves: fdo#84885 chart wizard dialog cut off

Change-Id: Ie24687cd1c54b1fed04745c83f507c17a5574175
(cherry picked from commit f9c242674094eba7ac19bd279f611dba0a8e5571)
Reviewed-on: https://gerrit.libreoffice.org/12052
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>