Add error boundary component for catching render errors on creator pages

[Chucks1093]

Summary

If a creator page throws a render error the entire app crashes to a blank screen. A React error boundary scoped to creator pages catches these errors and shows a fallback UI instead, keeping the rest of the app functional.

Scope

• Add a CreatorPageErrorBoundary component wrapping creator detail routes
• Fallback UI shows a short message and a link back to the creator list
• Log the error to console in development

Acceptance Criteria

• Render error on a creator page shows fallback UI instead of blank screen
• Rest of the app (navigation, other routes) remains functional
• Fallback includes a link back to the creator list

ETA: 12 hours

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Coordinate on Telegram

[T-kesh]

@T-kesh has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@T-kesh's PR #470 was approved and merged by @Chucks1093.

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This issue has been completed by @T-kesh as part of the Stellar Wave Program's 6th Wave 🥳

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