add not found redirection logic if object in url param not exists

[etiennejouan]

closes #10150

[greptile-apps]

PR Summary

This PR implements 404 redirection logic when users attempt to access non-existent object pages through URL manipulation.

• Moved <PageChangeEffect /> inside <ObjectMetadataItemsGater> in AppRouterProviders.tsx to access object metadata context
• Added URL parameter validation in usePageChangeEffectNavigateLocation.ts to check object names against metadata
• Added test cases in usePageChangeEffectNavigateLocation.test.ts for non-existent object scenarios
• Implemented redirection to NotFound page when invalid object names are detected in URLs

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[github-actions]

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