[DevTools] Attempt at a better "unique suspender" text (#34854)

Nobody knows what this terminology means.

Also, this tooltip component sucks:

<img width="634" height="137" alt="Screenshot 2025-10-15 at 12 04 49 AM"
src="https://github.com/user-attachments/assets/a1c33650-7c7d-441f-8f8b-0ea7ebea9351"
/>