Resolves: #i122410# extended Undo/Redo for text to broadcast

(cherry picked from commit d2c3483a)

Conflicts:
	svx/source/svdraw/svdundo.cxx

Change-Id: If4e96f6c192d381324e12a3acea87f624ef194ea

svx/source/svdraw/svdundo.cxx

@@ -1153,6 +1153,11 @@ void SdrUndoObjSetText::Undo()
 
     pObj->SetEmptyPresObj( bEmptyPresObj );
     pObj->ActionChanged();
+
+    // #i122410# SetOutlinerParaObject at SdrText does not trigger a
+    // BroadcastObjectChange, but it is needed to make evtl. SlideSorters
+    // update their preview.
+    pObj->BroadcastObjectChange();
 }
 
 void SdrUndoObjSetText::Redo()
@@ -1166,6 +1171,11 @@ void SdrUndoObjSetText::Redo()
     }
     pObj->ActionChanged();
 
+    // #i122410# NbcSetOutlinerParaObjectForText at SdrTextObj does not trigger a
+    // BroadcastObjectChange, but it is needed to make evtl. SlideSorters
+    // update their preview.
+    pObj->BroadcastObjectChange();
+
     // Trigger PageChangeCall
     ImpShowPageOfThisObject();
 }