The name of the cloned Material is not copied.

[jtabibito]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
`

var entity = scene.createRootEntity("Cylinder");
var mr = entity.addComponent(MeshRenderer);
mr.mesh = PrimitiveMesh.createCylinder(engine, 0.3, 0.3, 0.5);
var mat = new BlinnPhongMaterial(engine);
mat.baseColor = new Color(0.3, 0.7, 0);
mr.setMaterial(mat);
mat.name = 'BlinnPhong';
var mat1 = mat.clone();
if (mat1.name === 'BlinnPhong') {
  console.log("True");
} else {
  console.log(mat1.name);
}

`

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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