Cannot instance mesh lights

**Describe the bug**
An instancer does not instance mesh lights.
If I look at the debug ass file from Solaris, the instancer is instancing the mesh node, not the mesh_light

**To Reproduce**
Steps to reproduce the behavior:
1. Create a geometry light (mesh light)
2. Use an instancer to instance that

A zip archive with a usda file, and a Houdini scene, is attached.
[mesh_light_instances.zip](https://github.com/user-attachments/files/18459196/mesh_light_instances.zip)

**Expected behavior**
Mesh lights should be instanced like other light types.

**Used Software Versions**
- Arnold 7.3.6

Start with the attached mesh_light_instances.zip and reproduce the issue in the Houdini scene using Arnold 7.3.6. Inspect the Solaris debug ass file to compare the instanced mesh node with the expected mesh_light. Done means the instancer produces mesh light instances like other light types.

Written by the indexing model from the issue text.