[Dev UI] Make image previews expandable

[mjchristy]

Overview

A clear and concise description of what the feature is.

User goal(s)

Users want the option of viewing the entire image on their screen
If they want to see more details, they can click zoom and a modal/lightbox will appear.

Requirements

Acceptance Criteria

• 1 Images across runners and evals should be no more than 600px on their long edge.
• 2 Rounded corners of 8px look nice.

Designs

Borrow from AI studio
Overlay on the image

Notes

Are there any open questions? Anything else