v3.18.8

What's Changed

• Add "Try the Beta" Banner by @mvexel in #2942
• Bump vite from 8.0.16 to 8.3.5 by @dependabot[bot] in #2964
• Bump vitest from 4.1.8 to 4.1.11 by @dependabot[bot] in #2912
• Fix instruction widget resize not being persisted; make default height taller by @jake-low in #2925
• Fix the Completion widget in the Review workspace by @CollinBeczak in #2927

Full Changelog: v3.18.7...v3.18.8