GLTF Mesh Import: Logging the error "Unable to process mesh due to 16-bit index limits"

[AtlasLinden]

Environment

Second Life Project Gltf-mesh-import 7.1.14.15312236431 (64bit)

Description

Uploading the below model gives the following error in the Upload Model Log: LOD3 Bad element

Whereas in the SecondLife.log file the error is actually given as LLGLTFLoader::populateModelFromMesh : Unable to process mesh due to 16-bit index limits

The Upload Model Log should reflect the same information as given in SecondLife.log instead of the vague error currently provided.

Model: https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Assets/main/Models/ScatteringSkull/glTF-Binary/ScatteringSkull.glb

Note that this issue may be already be covered in #4114

Reproduction steps

1. Upload the above model
2. Verify Log shows helpful info

[Dan-Linden]

Passed QA.
Verified on Second Life Release 7.1.14.15830455952 on Win10/OSX in the scope of https://github.com/secondlife/iqa/issues/516