Update Jellyfin bootstrap for health checks and wizard completion

[KyleTryon]

This pull request improves the reliability of the Jellyfin service startup process in the development environment by ensuring that dependent services wait until Jellyfin is fully healthy or its startup wizard is completed before proceeding. The changes update both the Docker Compose configuration and the bootstrap script to better handle Jellyfin's startup state.

Service health checks:

• Changed the jellyfin service condition in docker-compose.dev.yml from service_started to service_healthy, ensuring that dependent services only start once Jellyfin passes its health check.

Bootstrap script improvements:

• Added a new function startup_completed_from_public_info and replaced the previous wait logic with wait_for_startup_ready_or_completed, which waits until either the startup wizard is completed or the /Startup/User endpoint is available. This makes the startup process more robust and less prone to race conditions.
• Updated the login process in login_jellyfin() to use the improved waiting mechanism, ensuring the script only proceeds once Jellyfin is truly ready.