fix: admin-dashboard use imagesPath and mapUsersWithAvatars

[shinokada]

🔗 Related issue (optional)

Closes #

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📑 Description

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🔍 PR Type

• Bug fix
• Feature
• Documentation
• Refactor / Code cleanup
• Build / Tooling
• Other (please describe)

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🚦 PR Status

• Draft (work in progress, not ready for review)
• Ready for review ✅

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✅ Checklist

• My code follows the existing code style
• I have run pnpm check && pnpm test:e2e and all tests pass
• CoderabbitAI review has been completed and actionable suggestions were reviewed
• I have updated documentation if my changes require it
• I have updated the api-check directory if a component API changed
• My PR is based on the latest main branch (not the published npm version)
• I have checked accessibility where applicable (ARIA, keyboard nav, etc.)
• I have reviewed the rendered component in the browser

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🧪 Screenshots / Demos (optional)

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⚠️ Breaking Changes (optional)

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ℹ️ Additional Information

[vercel]

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