bugfix propertygrid does not update values any more

WpfDesign.Designer/Project/Xaml/XamlModelProperty.cs

@@ -53,6 +53,7 @@ namespace ICSharpCode.WpfDesign.Designer.Xaml
 			ValueChanged += (x, y) =>
 			{
 				OnPropertyChanged("Value");
+				OnPropertyChanged("DesignerValue");
 				OnPropertyChanged("ValueOnInstanceOrView");
 			};
 			ValueOnInstanceChanged += (x, y) =>

WpfDesign/Project/PropertyGrid/PropertyNode.cs

@@ -334,6 +334,7 @@ namespace ICSharpCode.WpfDesign.PropertyGrid
 		{
 			RaisePropertyChanged("IsSet");
 			RaisePropertyChanged("Value");
+			RaisePropertyChanged("DesignerValue");
 			RaisePropertyChanged("ValueString");
 			RaisePropertyChanged("IsAmbiguous");
 			RaisePropertyChanged("FontWeight");
@@ -346,6 +347,7 @@ namespace ICSharpCode.WpfDesign.PropertyGrid
 		void OnValueOnInstanceChanged()
 		{
 			RaisePropertyChanged("Value");
+			RaisePropertyChanged("DesignerValue");
 			RaisePropertyChanged("ValueString");
 		}