Fix Invite Page Avatar and Metadata IssuesPublic

AI Summary

The user wanted to fix the issue of invite pages showing the same avatar image and ensure the invite Open Graph images use the correct fallback based on organization name and slug. The investigation revealed that the avatar URL was missing from the namespace data, causing fallbacks to a generic image. The fallback logic was updated to prefer the organization display name before the slug, aligning invite avatars with the rest of the app.