fix: add missing dependencies to handleExport useCallback

[Hastiv01]

Description

Fixed the handleExport function by adding missing dependencies to the useCallback dependency array in src/hooks/useVideoEditor.ts.

Previously, some updated audio settings like music file, volume, and loop option were not always applied during export because the latest values were not being used.

Changes made:
-Added missing dependencies to the handleExport hook
-Ensured updated audio and overlay settings are correctly used during export

Related Issue

Closes #787

Type of Contribution

• Bug fix
• New feature
• Documentation update
• GSSoC contribution

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• I have read the contribution guidelines
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• No console.log statements left in
• This PR is related to a valid issue
• Screen recording attached above (required for UI/feature/design changes)

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[github-actions]

👋 Thanks for your PR, @Hastiv01!

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[github-actions]

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