Model3D Examples fixes (#1035)
* fix examples
* fixes
* fix moddl3d examples
* format fixes
* fixed tests
* fix tests
* fix clearColor null
Co-authored-by: Dawood Khan <dawoodkhan@DawoodsWorkMBP.localdomain>
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
