sc lok: add missing commandName

LOOL requires to filter a requested command values message

Change-Id: If2eeb9990e0f9aec6410a70f7a6c132c080bda80

sc/source/ui/view/tabview.cxx

@@ -2348,6 +2348,7 @@ OUString ScTabView::getRowColumnHeaders(const Rectangle& rRectangle)
     }
 
     boost::property_tree::ptree aTree;
+    aTree.put("commandName", ".uno:ViewRowColumnHeaders");
     aTree.add_child("rows", aRows);
     aTree.add_child("columns", aCols);
     std::stringstream aStream;