@remotion/convert: Improve transcribe UI with model sizes and delete functionality

[Copilot]

Enhanced the transcribe route's model selection dropdown to provide better user experience and model management capabilities.

Changes Made

• Dynamic model loading: Replaced hardcoded model list with getAvailableModels() to fetch all available Whisper models
• Model size display: Each dropdown entry now shows the formatted download size using the existing formatBytes() utility
• Delete functionality: Added delete buttons for downloaded models within dropdown entries
• State management: Integrated getLoadedModels() to track which models are downloaded and refresh the list after deletions

Implementation Details

The dropdown now displays:

• Model name (e.g., "tiny.en", "base", "small")
• Formatted download size (e.g., "74.1 MB", "141.1 MB", "464.9 MB")
• Red "Delete" button for models that are already downloaded

The delete functionality uses the existing deleteModel() function and automatically refreshes the loaded models list to keep the UI in sync.

UI/UX Improvements

• Users can now see model sizes before downloading to make informed decisions
• Downloaded models can be deleted directly from the selection dropdown
• No need to navigate to separate sections for model management
• Maintains existing selection behavior while adding management capabilities

Fixes #5450.

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Name	Status	Preview	Comments	Updated (UTC)
bugs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 21, 2025 7:37am

1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
remotion	⬜️ Skipped (Inspect)			Jun 21, 2025 7:37am