In Writer it might cause a problem to use relative
size with text based numberings.

Change-Id: Id19b5e45f0f932d1b69028f343daad7dec34ae23
Reviewed-on: https://gerrit.libreoffice.org/66811
Tested-by: Jenkins
Reviewed-by: Tamás Zolnai <tamas.zolnai@collabora.com>