Skinned Mesh Renderer Bounds aren't calculated.

[XtroTheArctic]

Describe the bug 💬

This is inconsistent with FBX importer. Causes redundant prefab modifications to be to be applied in the scene (or in prefab variant).

Steps to reproduce 🔢

Select a skinned mesh renderer in an imported GLTF asset and see the bounds are zero.

Files to reproduce the issue ♻

No response

Editor Version 🎲

Other (Provide details below)

Render Pipeline and version

Not relevant

UnityGLTF Version

2.17.1

Operating System 👩‍💻

Windows

When does this problem happen?

• Editor Import
• Runtime Import
• Editor Export
• Runtime Export

Additional Info 📜

No response

Validations 🩹

• I have searched existing issues: no issue already exist that reports the same problem.
• I follow the Code of Conduct
• I provided a minimal reproducible example, including files when necessary.

[XtroTheArctic]

I'll send a PR for this.

[XtroTheArctic]

PR submitted: #878