Modernize the script session elevation warning in ISE somewhat so that it's less jarring

Before:
<img width="1054" height="487" alt="Image" src="https://github.com/user-attachments/assets/e6d8f752-4139-4ffd-8fed-f30b48d281a1" />

After:
<img width="853" height="618" alt="Image" src="https://github.com/user-attachments/assets/452b2ea7-80d4-433d-8e19-4a40f8fb5ce5" />