Fix Smooth by UV Islands on Blender 4.1+

[BladeSides]

Blender 4.1 removed the use_auto_smooth attribute (https://developer.blender.org/docs/release_notes/4.1/python_api/), so this just removes the auto smoothing if the version is greater than 4.1.

I checked it with Blender 3.6, 4.0, and 4.1, and it seems to be working in all versions.

Hope it's helpful ^^

[BladeSides]

Should also help with the issue I opened. https://github.com/franMarz/TexTools-Blender/issues/211

[franMarz]

Thank you.