Since we overload performKeyEquivalent: for the main menu to not search the bundle menus, there should no longer be a need to try and prevent the system from interpreting key equivalents for bundle menu items.
The old techniques used to set key equivalents no longer work. Unfortunately, this technique is only a workaround and is not pixel-for-pixel identical due to the way NSMenuItem lays itself out when rendering a key equivalent; but I think it's the best that can be done for now.