In LO, it appears to be impossible for a style based on a
Chapter Numbering List style to inherit the numbering and outline
level. Ensure that any fix for Word-authored documents that DO
inherit this don't break round-tripping natively created docx files.

Change-Id: I0cd4c25fbc7cd60346fcd949d5a3b89c2b311dbd
Reviewed-on: https://gerrit.libreoffice.org/49544Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Justin Luth <justin_luth@sil.org>