fix: add authloader

[diana-villalvazo-wgu]

Description

Add authenticated loader, so if a user is not logged in and lands into instructor dashboard page it should redirect to login page.

Demo

Screen.Recording.2026-05-14.at.11.05.08.a.m.mov

Best Practices Checklist

We're trying to move away from some deprecated patterns in this codebase. Please
check if your PR meets these recommendations before asking for a review:

• Any new files are using TypeScript (.ts, .tsx).
• Deprecated propTypes, defaultProps, and injectIntl patterns are not used in any new or modified code.
• Tests should use the helpers in src/testUtils.tsx (specifically initializeMocks)
• Use React Query to load data from REST APIs. See any apiHooks.ts in this repo for examples.
• All new i18n messages in messages.ts files have a description for translators to use.
• Imports avoid using ../. To import from parent folders, use @src, e.g. import { initializeMocks } from '@src/testUtils'; instead of from '../../../../testUtils'

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.02%. Comparing base (411ee13) to head (08e376a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #206   +/-   ##
=======================================
  Coverage   91.02%   91.02%           
=======================================
  Files         148      148           
  Lines        2708     2708           
  Branches      618      618           
=======================================
  Hits         2465     2465           
+ Misses        237      235    -2     
- Partials        6        8    +2     

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[brian-smith-tcril]

Matches how learner dash handles it. LGTM!

[openedx-semantic-release-bot]

🎉 This PR is included in version 1.0.0-alpha.43 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀