Sprite - Add Sprite Node Material as valid constructor argument

[cmhhelgeson]

In the WebGPURenderer, Sprites can also take any class that extends SpriteNodeMaterial, as demonstrated by this example.

https://threejs.org/examples/?q=webgpu%20points#webgpu_instance_points

material = new THREE.PointsNodeMaterial( {

     colorNode: pointColors,
     opacityNode: shapeCircle(),
     positionNode: instancedBufferAttribute( positionAttribute ),
     // rotationNode: time,
     sizeNode: instancedBufferAttribute( instanceSizeBufferAttribute ),
     // size: 40, // in pixels units
     vertexColors: true,
     sizeAttenuation: false,
     alphaToCoverage: true

} );

const instancedPoints = new THREE.Sprite( material );

[cmhhelgeson]

I thought this would be fixed by adding the proper JSDoc but it seems like SpriteNodeMaterial is still not referenced. I'm also not quite sure why the CI/test failed on nodes that weren't modified.