Updating spotlight's definition, detaches the spotlight target.

[divyun]

Describe the bug
In @glTF-transform/view, when updating the light's definition, causes the target to no longer update, with parent's transformation.

To Reproduce

1. Create a light
2. Attach to a node.
3. Update any property on light.
4. Target no longer responds to updates to the node, like rotation.

const lightsExt = doc.createExtension(KHRLightsPunctual);
const light = lightsExt.createLight('Light 1');
const node = doc.createNode('Node 1');
node.setExtension("KHR_lights_punctual", light);

let lightObj = docView.view(light);
lightObj.target.parent; // correct

light.setIntensity(10);

let lightObj = docView.view(light);
lightObj.target.parent; // undfined

Expected behavior
Transformations to the parent should continue to reflect on the target.

Versions:

• Version: 4.0.8
• Environment: Browser