UI elements overlap

Steps to reproduce:

1. Create a Unity project
2. Select "Light" Unity theme
3. Click the "AI" button
4. Click "Agree and install Unity AI"
5. Wait until the installation is complete
6. Verify that "Agent" would be selected
7. Enter "How to create a cube via C#" prompt and click "Send Prompt"
8. Observe the result

Actual results: Action buttons (Save/Copy) are misaligned and overlapping

Expected results: UI elements should maintain proper padding and depth sorting

Reproducible with versions: 2.4.0-pre.1, 2.5.0-pre.2

Not reproducible with versions: 2.3.0-pre.2

Tested on (OS): macOS - Tahoe 26.4