Add an onboarding banner for the Agent panel (#30050)
This PR adds an onboarding banner for the Agent panel:
<img width="262" alt="Screenshot 2025-05-06 at 6 54 58 PM"
src="https://github.com/user-attachments/assets/52849e64-7d5d-488c-8456-4d7bd97f8ebd"
/>
Release Notes:
- N/A
300da3b718Marshall Bowers committed on 5/6/2025, 11:41:04 PM· committed by GitHubparent0db8668