chore(generative-ai): move ai sign in modal to gen ai package from atlas-service COMPASS-8459#6448

Anemy merged 8 commits intomainmongodb-js/compass:mainfrom

COMPASS-8459-move-generative-ai-sign-in-enable-to-gen-ai-packagemongodb-js/compass:COMPASS-8459-move-generative-ai-sign-in-enable-to-gen-ai-packageCopy head branch name to clipboard