tdf#133713 sd: bullets and numbering should enable it

tdf#133713 sd: bullets and numbering should enable it

This fixes a LO 6.3 regression caused by re-working
the numbering dialog (switching from FuOutlineBullet
to the new FuBulletAndPosition).

When running uno:OutlineBullet, one expects to have
numbering applied to the selection. However, that part
was completely omitted from the new implementation.
I can't imagine why, since most everything else in the
nearby code was just a copy/paste from the old methods.

This patch restores some of the logic from the old function.
[Deleted in commit 5ff162bede44b77cb19e5ff6571b6e34f228d9fb
Author: Gül?ah Köse on Mon May 27 23:49:41 2019 +0300
    tdf#120905 Remove old FuOutlineBullet dialog code.]

Partially revert loplugin:unusedmethods to recover EnableBullets()
from commit cae829e9c1394851fc88829d5197460929c2792a

This fixes Format -> Bullets and Numbering,
right-click pop-up Bullets and Numbering,
and sidebar's Toggle * List's "More Numbering".

Change-Id: Iee3b66bd715e92167c9423242627a996191dcb72
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/126904
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
(cherry picked from commit 12832284318125b8649f6a67e3aa12aa953afdfb)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127176
Reviewed-by: Justin Luth <jluth@mail.com>