tdf#146851: writerfilter: do not recreate list levels on override
AddLevel() can be called on w:lvl and on w:lvlOverride. But if
we have level override and some extra level definition level is
recreated and override information is lost.
Change-Id: I6f1b9b50bdd3410b4ae2d403e760e4d6df5677d2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/131304
Tested-by: Jenkins
Reviewed-by: Thorsten Behrens <thorsten.behrens@allotropia.de>
Signed-off-by: Xisco Fauli <xiscofauli@libreoffice.org>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/131647
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>