fdo#85403 broadcast changes after TextToColumn

Regression introduced with 3d869cda8db03820dea8c4ba463eb155d05e933b for
fdo#74014

Change-Id: Ie8ca1e7c15609aaf80b4ecbb6ccffc30a3f79f0a
(cherry picked from commit 99cfc0f8a321c3fd3ef1a49d669ebc5744dbf606)
Reviewed-on: https://gerrit.libreoffice.org/12216
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>