If the argument is an array, the array will be destructed.

See: https://github.com/mrdoob/three.js/blob/r160/examples/jsm/nodes/materialx/lib/mx_noise.js

- Fix type of mx_hsv, mx_noise, MaterialXNodes
- Add missing methods of mx_noise
- Add mx_transform_color
- Update test cases
    - the directory name was `materials` instead of `materialx`, fixed this

`mx_noise.js` exports requires all arguments to exist, while `MaterialXNodes.js` exports don't

I forgot to put a thing in `assetSwizzable()`

The error is since `ContextNode` already has a member `.context` and `ShaderNodeObject` also gives it a method `.context`

See: three-types#744 (comment)

I believe the behavior that the node class properties takes precedance than NodeElements is same as the actual implementation

See: https://github.com/mrdoob/three.js/blob/r163/examples/jsm/nodes/shadernode/ShaderNode.js