If the previous break was also a continuous section break,
this break was simply ignored ever since
commit 1fdd61db.

Thus, the default handler took over and assigned PROP_PAGE_DESC
if there was some kind of page style known
(either the first page/Standard defaults or any "converted" styles
that had been created) which effectively became a new page break.

Change-Id: I839570b0330ba274552cc671014e997c42765f4b
Reviewed-on: https://gerrit.libreoffice.org/26567Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Justin Luth <justin_luth@sil.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>