tdf#101814 sw: MSWord export: don't override first-page with heuristics

Revert commit dcea8ba3, and do the
opposite.  The added "titlePage" check makes no sense, because in that
case there is already an explicit first-page style in the PageDesc, and
overriding that cannot be right.

The test added in that commit still succeeds, which suggests that the
root cause of that bug was elsewhere and was fixed in the meantime.

Change-Id: I9b21b6dc115be28cb0ee3360615c538d4cfee3cb

sw/source/filter/ww8/wrtw8sty.cxx

@@ -1613,18 +1613,19 @@ void MSWordExportBase::SectionProperties( const WW8_SepInfo& rSepInfo, WW8_PdAtt
     {
         // if a Follow is set and it does not point to itself,
         // then there is a page chain.
-        // Falls damit eine "Erste Seite" simuliert werden soll, so
-        // koennen wir das auch als solches schreiben.
-        // Anders sieht es mit Links/Rechts wechseln aus. Dafuer muss
-        // erkannt werden, wo der Seitenwechsel statt findet. Hier ist
-        // es aber dafuer zuspaet!
-        if ( pPd->GetFollow() && pPd != pPd->GetFollow() &&
+        // If this emulates a "first page", we can detect it here and write
+        // it as title page.
+        // With Left/Right changes it's different - we have to detect where
+        // the change of pages is, but here it's too late for that!
+        // tdf#101814 if there is already a explicit first-page, no point
+        // in checking heuristics here.
+        if ( !titlePage && pPd->GetFollow() && pPd != pPd->GetFollow() &&
              pPd->GetFollow()->GetFollow() == pPd->GetFollow() &&
              ( !rSepInfo.pPDNd || pPd->IsFollowNextPageOfNode( *rSepInfo.pPDNd ) ) )
         {
             const SwPageDesc *pFollow = pPd->GetFollow();
             const SwFrameFormat& rFollowFormat = pFollow->GetMaster();
-            if ( sw::util::IsPlausableSingleWordSection( *pPdFirstPgFormat, rFollowFormat ) || titlePage )
+            if (sw::util::IsPlausableSingleWordSection(*pPdFirstPgFormat, rFollowFormat))
             {
                 if (rSepInfo.pPDNd)
                     pPdFirstPgFormat = pPd->GetPageFormatOfNode( *rSepInfo.pPDNd );