Fix null error in late animation bindings

[jjv360]

https://forum.babylonjs.com/t/error-in-processlateanimationbindings/33464

TypeError: Cannot read properties of null (reading 'm')
    at core_scene.a._processLateAnimationBindings (animatable.js:730:48)
    at core_scene.a._animate (animatable.js:429:1)
    at Scene.animate (scene.js:3661:1)
    at Scene.render (scene.js:3737:1)

[azure-pipelines]

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[azure-pipelines]

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