QmlDesigner.Puppet: define default values for Layout attached properties

Change-Id: Id81ad808e826813334c6f157331c21fe51dfe69c
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

share/qtcreator/qml/qmlpuppet/qml2puppet/instances/objectnodeinstance.cpp

@@ -1262,6 +1262,11 @@ void ObjectNodeInstance::populateResetHashes()
             m_resetValueHash.insert(propertyName, property.read());
         }
     }
+
+    m_resetValueHash.insert("Layout.rowSpan", 1);
+    m_resetValueHash.insert("Layout.columnSpan", 1);
+    m_resetValueHash.insert("Layout.fillHeight", false);
+    m_resetValueHash.insert("Layout.fillWidth", false);
 }
 
 QQmlAbstractBinding *ObjectNodeInstance::resetBinding(const PropertyName &propertyName) const