Describe the bug
The !GameInputPatcher.BindableButtons.Contains check here passes even if just a controller bind or just a keyboard bind is missing. As an example with one of my mods, the error is the following:

Button 'TransferAllItemsButton' has a category but wasn't set to be bindable. Please set the button to be bindable first.

And the code for it is:

            TransferAllItemsButton = EnumHandler.AddEntry<GameInput.Button>("TransferAllItemsButton")
                .CreateInput("Transfer all items", "Hold this key and click an item to transfer all items.")
                .WithKeyboardBinding(InputPaths.Keyboard.Shift)
                .WithCategory("Container Utilities");

Which makes the error misleading. I think it should be thrown only if there are no WithKeyboardBinding and no WithControllerBinding.

To Reproduce
Steps to reproduce the behavior:

1. Create a button in your mod that only has a keyboard bind or only has a controller bind
2. Run the game
3. Check the log
4. See error

Expected behavior
Nautilus will throw the error in LogOutput.log.