fix: memoize updateEditorLanguage and fix useEffect dependency

[narutamaaurum]

Addresses CodeRabbit review comments on #481.

Changes:

• Memoized with using as dependency
• Changed the dependency from to
• Removed the eslint-disable comment since the dependency is now correct

This follows the React best practice of depending on stable function references rather than the values they close over.

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📥 Commits

Reviewing files that changed from the base of the PR and between f12b223 and 73bdef4.

📒 Files selected for processing (1)

• modules/playground/components/playground-editor.tsx

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