[Fix]Only reuse VideoRenderers when they are actually presented

[ipavlidakis]

🎯 Goal

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📝 Summary

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🛠 Implementation

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🎨 Showcase

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🧪 Manual Testing Notes

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☑️ Contributor Checklist

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• This change should receive manual QA
• Changelog is updated with client-facing changes
• New code is covered by unit tests
• Comparison screenshots added for visual changes
• Affected documentation updated (Docusaurus, tutorial, CMS)