sw: don't repaint all text frames on turning off a bullet for bullet numberings

sw: don't repaint all text frames on turning off a bullet for bullet numberings

This is similar to the text node deletion case, but here no text is
deleted, just a text node with bullet numbering is turned into one
without a numbering.

Again, it is not necessary to repaint all text frames of the numbering,
since the bullet char is the same for all nodes (unlike e.g. Arabic
numbering).

(cherry picked from commit ccabb67d77e2bcece42434f51cf6d84d393d567c)

Change-Id: Ieb071031ca5ce0421c4120c4c89089af6c811848
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110160
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>