fdo#79940 LO crashes on opening; tries to remove a para with bookmarks

LO crashes while opening the issue file as, DomainMapper_Impl::RemoveLastParagraph
tries to dispose a paragraph which has bookmarks attached.

If A para finishes and a new para has not been started as yet,
which means the current cursor position is outside a paragraph.  In such a case move the
Bookmark-End to the earlier paragraph.
Added the issue file in sw/qa/core/data/ooxml/pass/

Change-Id: I62cf94718add943d042d770ab5337a0dae70d9e8
Reviewed-on: https://gerrit.libreoffice.org/9764
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>