Remove redundant WM_LBUTTONUP handling

- Remove redundant WM_LBUTTONUP handling for notification icon clicks, left clicks now handled only by NIN_SELECT.
- Fixed LeftClickCommand double execute due to WM_LBUTTONUP was handled.

Author: DarkPro1337

src/NotifyIconWpf/Interop/WindowMessageSink.cs

@@ -251,9 +251,9 @@ private void ProcessWindowMessage(uint msg, IntPtr wParam, IntPtr lParam)
                     MouseEventReceived?.Invoke(MouseEvent.IconLeftMouseDown);
                     break;
 
-                case WindowsMessages.NIN_SELECT:
-                    //Sent when the icon is selected with the left mouse button.
-                case WindowsMessages.WM_LBUTTONUP:
+                case WindowsMessages.NIN_SELECT when Version == NotifyIconVersion.Vista:
+                    // Sent when the icon is selected with the left mouse button.
+                case WindowsMessages.WM_LBUTTONUP when Version != NotifyIconVersion.Vista:
                     if (!isDoubleClick)
                     {
                         MouseEventReceived?.Invoke(MouseEvent.IconLeftMouseUp);