Use the skin's scale to modify lod to avoid lod scaling errors.

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Fixes: #58570

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Character.zip
Test case from #58570

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Discussed during a pull request review meeting that @reduz will see if @JFonS can find some time to "bake" the skins of the mesh so we don't have this problem.

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Reduz

4:56 AM
fire Saracen Tokage It should be something along these lines:

• For every mesh, you need to send the index buffer and vertices to the LOD code.
• When the mesh has a skeleton, if bones are scaled, the mesh sent to the LOD code will not > represent its true size if bones are scaled, hence LOD will be wrong
• Hence, the mesh neds to be transformed by applying its skin, to do this:

1. Obtain all vertices, normals, tangents, weights and indices from mesh
2. Get the skin transforms and map to vertices (with index), invert the matrices
3. Go vertex by vertex, transform each by the transform at each index and apply the weight > (basically for each vertex where weight > 0, its final_vertex += (xform[bone_index] * vertex) * bone_weight;
4. With the transformed mesh, run the LOD code.

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This was agreed in consensus to be the wrong approach. I reposted the new reduz design @SaracenOne said he was interested in looking at it.