How to reproduce:
1. Create a new project
2. Install and open the AI Assistant
3. Ask the Assistant to generate glsl code for a new shader
4. Save the file with the Save button
5. Observe the file type
6. Open the saved file
7. Observe the result

Expected result: The shader code is saved as a .glsl file and does not contain the Unity namespaces
Actual result: The shader code is saved as a .cs file and contains the Unity namespaces

Reproducible with: 1.0.0-pre.4 (6000.2.0a9), 1.0.0-pre.8 (6000.2.0b9, 6000.3.0a1)
Could not test with: 2022.3.64f1, 6000.0.53f1, 6000.1.11f1 (AI Assistant package not supported), 1.0.0-pre.3 (6000.2.0a9) (Could not open the Assistant - “ExecuteMenuItem failed because there is no menu named 'Muse/Chat'“)

Reproduced on: Windows 11
Not reproduced on: No other environment tested