Implement a new 'isPublic' field for videos, allowing administrators to control the visibility status (Published or Draft) of videos through the admin interface and display this status in the video management list. Updates the EditVideoDialog to include a select component for managing this status.
Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 170e18f0-0f13-4eca-8643-546bba1dd8cc
Replit-Commit-Checkpoint-Type: full_checkpoint
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