fdo#78907 : File crashed while saving.

   - There is pagebreak in file and footer has nested table.
   - While exporting LO write section break instead of PAGE_BREAK.
   - Due to this it was writing two sections in file and same footer
     for both sections.
   - This was causing wrong table depth values due to this it was crashing
     while writing table.
   - So in MSWordExportBase::OutputSectionBreaks if next node has
     RES_BREAK(page break) then bNewPageDesc value should be false.

Change-Id: I2ccc4e48a26253716253a7280a244f06e172770a
Reviewed-on: https://gerrit.libreoffice.org/9568
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>