[DevTools] Implement list pane in Suspense tab

[eps1lon]

Breaks on Next.js apps. Trying to figure out if existing bug or not.

CleanShot.2025-08-10.at.12.07.20.mp4

[react-sizebot]

Comparing: 98286cf...bf92251

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
oss-stable/react-dom/cjs/react-dom.production.js	=	6.68 kB	6.68 kB	=	1.83 kB	1.83 kB
oss-stable/react-dom/cjs/react-dom-client.production.js	=	530.04 kB	530.04 kB	=	93.63 kB	93.63 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	6.69 kB	6.69 kB	=	1.83 kB	1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js	=	654.48 kB	654.48 kB	=	115.34 kB	115.34 kB
facebook-www/ReactDOM-prod.classic.js	=	674.42 kB	674.42 kB	=	118.68 kB	118.68 kB
facebook-www/ReactDOM-prod.modern.js	=	664.84 kB	664.84 kB	=	117.02 kB	117.02 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against bf92251

[sebmarkbage]

Let's discuss the UI because this wasn't my intention for the sidebar. It's supposed to be the Activity names just like the filter for the Components tab. In fact the same pane should be available in both tabs.

[eps1lon]

Replaced by #34908