MorphTarget Weights Pointers not working

Hey,
i have here a basic sample where we get the mesh id from a node, and then get/set the weights of the mesh. But it's currently doing nothing.
When i take a look in the pointer registration in BabylonDecorator.ts, it seems the weights pointers are just missing at the moment.

[MorphTargets.zip](https://github.com/user-attachments/files/19067925/MorphTargets.zip)

Start with BabylonDecorator.ts and inspect the pointer registration for mesh morph-target weights. Reproduce the behavior using the attached MorphTargets.zip sample, then verify that getting and setting the weights through the node-derived mesh id changes the mesh as expected.

Written by the indexing model from the issue text.