UI Authoring Hierarchy Integration prevents Hierarchy's full context menu from opening after UXML element was expanded and collapsed

Steps to reproduce:

1. Open the attached project
2. Open the SampleScene
3. Right-click below the UI document object - observe that the full context menu opens
4. Expand the UI document as well as the nested visual elements in the Hierarchy window
5. Collapse the expanded UI document
6. Right-click below the UI document again

Actual results: Contextual menu only shows "Open in UI Builder" or "Open in UI Builder" and "Select VisualTreeAsset Asset" options if Right-click was performed in the area where the UI document was previously expanded

Expected results: Full contextual menu is displayed on right-click after the UI Document is collapsed

Reproducible with versions: 6000.4.0a5, 6000.4.0b1, 6000.5.0a3

Not reproducible with versions: 6000.0.63f1, 6000.2.14f1, 6000.3.0f1, 6000.4.0a4

Tested on (OS): Ubuntu 24.04, macOS 26.1