How to reproduce:
1. Create a new URP Unity Project
2. In the Project window, right-click -> Shader Graph -> URP -> Lit Shader Graph
3. Make sure to copy anything outside the Unity (text, picture)
4. In the Shader Graph, right-click in the workspace to open the contextual menu
5. Observe the options

Expected results: The "Paste" option is grayed out since no relevant items are in the clipboard
Actual results: The "Paste" option is active and can be clicked

Reproducible with: 2021.3.44f1, 2022.3.49f1, 6000.0.23f1

Reproducible on: macOS Sequoia 15.0 (M1)
Not reproducible on: No other environment tested

Notes:
- Sometimes "pasting" triggers Shader Graph recompilation 
- Paste options are not available in other Unity windows