cool#15716 find associated shape in SmartArt export

The export needs to write pt-elements for content text nodes with the
original modelId to data.xml. However, the shape has not this modelId
but the modelId of the associated pt-element of type=pres. Thus this
element is searched for in getMasterXShapeForPoint(). The error was, to
examine msPresentationLayoutName. That name is created by the author of
the SmartArt template and is arbitrary. And indeed, a name textNode
exists only twice in the over hundred predefined SmartArt templates. So
remove this test, it prevents to find the shape.

After removing the above mentioned test, an error in WriteText() in
the export becomes visible. The export of a SmartArt diagram calls
WriteText() with bBodyPr=false. With that no a:bodyPr element is
written at all. But for the CT_TextBody it is specified in OOXML, that
the bodyPr child element is mandatory. Thus we need to write an empty
element in this case. Without it, the file markup is invalid and
MS Office requests to repair the document.

Change-Id: I9cdf5e882b415ca1d13718d6c1e47ebb1d2c7018
Signed-off-by: Regina Henschel <rb.henschel@t-online.de>
Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/4396
Reviewed-by: Tomaž Vajngerl <tomaz.vajngerl@collabora.com>
Tested-by: Jenkins CPCI <releng@collaboraoffice.com>
(cherry picked from commit 533dccff298edc397a9c0fc564ba4d31b8c27432)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/206994
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
Tested-by: Jenkins

oox/source/export/drawingml.cxx

@@ -4614,6 +4614,10 @@ void DrawingML::WriteText(const Reference<XInterface>& rXIface, bool bBodyPr, bo
     if (bBodyPr)
     {
         WriteBodyProps(rXIface, nXmlNamespace, bIsFontworkShape, nTop, nBottom, nLeft, nRight);
+    }
+    else
+    {
+        mpFS->singleElementNS(XML_a, XML_bodyPr);
     } // end of bodyPr
 
     Reference< XEnumerationAccess > access( xXText, UNO_QUERY );

svx/source/diagram/datamodel_svx.cxx

@@ -671,7 +671,6 @@ uno::Reference<drawing::XShape> DiagramData_svx::getMasterXShapeForPoint(const P
     for (auto& rCandidate : getPoints())
     {
         if (!rCandidate.msPresentationAssociationId.isEmpty()
-            && "textNode" == rCandidate.msPresentationLayoutName
             && rCandidate.msPresentationAssociationId == rPoint.msModelId)
         {
             const uno::Reference<drawing::XShape> xMasterText = getXShapeByModelID(rCandidate.msModelId);