NIFI-15393 Fix login redirect to preserve original URL

[naman-shukla-ksolves]

Summary

NIFI-15393

Fixed login redirect issue where users were redirected to the home screen instead of their originally requested URL after authentication. The authentication flow now preserves the original destination URL and redirects users appropriately after login.

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  • JDK 21
  • JDK 25

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[exceptionfactory]

Thanks for proposing this improvement @naman-shukla-ksolves.

From a procedural perspective, please sign all Git commits and force-push to the branch for verification.

Regarding the substantive change, I will defer to others with more perspective on the frontend, but direct reference to sessionStorage seems questionable. At minimum, having a shared service abstraction seems safer than relying on decoupled references to a common item key.

[naman-shukla-ksolves]

@pvillard31 Thank you for the feedback. I've addressed both points:

1. All Git commits are now signed and the branch has been force-pushed for verification.
2. Replaced direct sessionStorage references with a shared service abstraction to ensure safer, decoupled state management with a single source of truth for the storage key.

Please review when you have a chance.

[exceptionfactory]

Tagging @mcgilman or @rfellows for UI review as time permits.