Maya instances of mayaUsdProxyShape do not render in Viewport 2.0

**Describe the bug**
When using Maya instancing of a object with a mayaUsdProxyShape, we don't get any instances of that shape drawing in the viewport except the first one.

Using renderers other than Viewport 2.0 such as Arnold will render the instances as expected.


We have an existing workflow that involves instancing in Maya assets that we would like to keep, and this is preventing that from being possible.

**Steps to reproduce**
Steps to reproduce the behavior:
1. Import a file as a mayaUsdProxyShape
2. In the Edit dropdown select Duplicate Special
3. In the Duplicate Special UI, toggle the Geometry Type to Instance
4. Move the instance in the viewport and see that nothing is drawn.
5. Also see that there are no UFE objects in the outliner.

**Expected behavior**
Maya instances of mayaUsdProxyShape should draw in the viewport.

**Specs (if applicable):**
- OS & version : Windows 10
- Maya version : 2022, 2024
- Maya USD : 0.30.0