chore: enable verbatimModuleSyntax to identify type-only imports and exports

[radium-v]

Pull Request

📖 Description

Replaces the deprecated importsNotUsedAsValues compiler option with verbatimModuleSyntax in the fast-element package. All imports and exports across the package are updated to use explicit type modifiers where applicable, ensuring TypeScript can distinguish between type-only and value imports/exports at the syntax level.

📑 Test Plan

All existing tests pass. No behavioral changes are introduced — this is a compile-time enforcement change only.

✅ Checklist

General

• I have included a change request file using $ npm run change
• I have added tests for my changes.
• I have tested my changes.
• I have updated the project documentation to reflect my changes.
• I have read the CONTRIBUTING documentation and followed the standards for this project.