fix: add loading state to handle authentication status check

[daniele-mng]

What

This PR adds a loading state to the routes.jsx component to handle the scenario where the authentication status isLoggedIn is not immediately available.

Why

These changes are necessary to prevent the application from incorrectly redirecting to the logged-out routes when the authentication status is not yet determined.

References

GEA-708

Checklist

• Tests

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Snapshot Warnings

⚠️: No snapshots were found for the head SHA 5fabb0a.

Ensure that dependencies are being submitted on PR branches and consider enabling retry-on-snapshot-warnings. See the documentation for more information and troubleshooting advice.

OpenSSF Scorecard

Package	Version	Score	Details

Scanned Manifest Files

[github-actions]

Conventional Commits Report

Type	Number
Bug Fixes	1

🚀 Conventional commits found.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 11 lines in your changes missing coverage. Please review.

Project coverage is 64.39%. Comparing base (48a2292) to head (5fabb0a).
Report is 2 commits behind head on opensight-ui.

Files with missing lines	Patch %	Lines
src/web/routes.jsx	0.00%	11 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           opensight-ui    #4182      +/-   ##
================================================
- Coverage         64.40%   64.39%   -0.01%     
================================================
  Files              1111     1111              
  Lines            103652   103662      +10     
  Branches           6466     6466              
================================================
  Hits              66755    66755              
- Misses            36757    36767      +10     
  Partials            140      140              

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