refactor: update editor related class names to use new design system

[iam-vipin]

Description

Type of Change

Screenshots and Media (if applicable)

Test Scenarios

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[coderabbitai]

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch update-editor_design

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