fix(examples): add missing code in react app to handle user_id from url

[SurajThotakura]

Here's the PR content for the recent commit on fix/spa-example-minor-fix:

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Summary

Adds missing commented-out code in the React SPA (npm) example app's member detail page to handle extracting user_id from the URL params.

Why

The member detail page in react-spa-npm was missing the commented-out hooks (useNavigate, useParams) that are needed to extract the user_id URL parameter. Other example apps (shadcn, next-rwa) already had this scaffolding in place, making this page inconsistent and incomplete for developers following the quickstart guidance.

What

Added the commented-out useNavigate and useParams hooks to examples/react-spa-npm/src/views/member-detail-page.tsx, aligning it with the pattern used in other example apps.

Packages

• packages/core
• packages/react
• examples

References

Related to the member management feature and member detail navigation flow across example apps.

Testing

How can this be verified? Note anything intentionally not covered by tests and why.

• This change adds unit test coverage
• Tested for both SPA and RWA flows, all example apps working
• All existing and new tests complete without errors

Checklist

• Breaking change
• Requires docs update
• Backward compatible

Contributing

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct