fix(www): render url videos in media node

[zbeyens]

Summary

Fixes #4625 by restoring the live video renderer used by the docs and registry examples for videos inserted via URL. That insert path creates a video node with a url but no isUpload flag, and the live component only rendered YouTube embeds or uploaded files, so plain video URLs disappeared.

This falls back to ReactPlayer for non-YouTube video URLs, adds a regression spec for the plain URL case, and syncs the playground template plus generated registry output.

Testing

• bun test apps/www/src/registry/ui/media-video-node.spec.tsx
• pnpm --filter www build:registry
• pnpm --filter www typecheck
• pnpm lint:fix
• pnpm check

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Project	Deployment	Actions	Updated (UTC)
plate	Ready	Preview, Comment	Mar 28, 2026 0:15am