[EMSUSD-3028] Hidden USD Lights Can be Selected in Viewport

**Describe the bug**
Adding a USD stage with lights to the scene, putting it on a display layer and switching on reference and/or toggling off visibility does not prevent selecting USD light objects in the viewport.

**Steps to reproduce**
Steps to reproduce the behavior:
1. Add USD Stage with lights to scene
2. Add top level stage object to Display Layer
3. Toggle off display layer visibility
4. Select where lights would be
5. Observe lights are selected

**Expected behavior**
No USD objects from the hidden display layer will be selected.

**Attachments**

**Specs (if applicable):**
- OS & version Windows 11
- Maya version 2026.2