Redux cleanup and data folder refactor

[jacobo-dominguez-wgu]

Description

All the redux code and files were removed, including all redux and related packages.
The folder and files structure for react query hooks and context were refactored.
Also includes a small refactor on the api files.

Packages removed:

dependencies: {
    "@redux-devtools/extension": "3.3.0",
    "@reduxjs/toolkit": "^2.0.0",
    "react-redux": "^7.2.4",
    "redux": "4.2.1",
    "redux-logger": "3.0.6",
    "redux-thunk": "2.4.2",
    "reselect": "^4.0.0",
},
devDependencies: {
    "redux-mock-store": "^1.5.4"
}

Context and react query folders after the refactor:

src/
└── data/
    │
    ├── constants/                   # Application constants
    │
    ├── context/                     # React Context providers
    │   ├── index.tsx                # Context exports
    │   ├── index.test.tsx           # Context tests
    │   ├── BackedDataProvider.tsx   # Backed data context
    │   ├── BackedData.test.tsx      # Backed data tests
    │   ├── FiltersProvider.tsx      # Filters state context
    │   ├── Filters.test.tsx         # Filters tests
    │   ├── MasqueradeProvider.tsx   # Masquerade context
    │   ├── Masquerade.test.tsx      # Masquerade tests
    │   ├── SelectSessionProvider.tsx # Session selection context
    │   └── SelectSession.test.tsx   # Session selection tests
    │
    ├── hooks/                       # React query hooks
    │   ├── index.ts                 # Hooks exports
    │   ├── queryHooks.ts            # React Query hooks
    │   ├── queryHooks.test.tsx      # Query hooks tests
    │   ├── mutationHooks.ts         # React Query mutations
    │   ├── mutationHooks.test.tsx   # Mutation hooks tests
    │   └── queryKeys.ts             # React Query key definitions
    │
    └── services/                    # External service integrations
        │
        ├── lms/                     # Learning Management System
        │   ├── index.js             # LMS service exports
        │   ├── api.ts               # LMS API client
        │   ├── api.test.tsx         # LMS API tests
        │
        └── segment/                 # Analytics/Segment integration

It closes #770
Part of react query migration initiative: #768
MUST BE REVIEWED AND MERGED AFTER: #786

Migration Strategy

Phase 1: Update Dependencies (does not apply)
Phase 2 (#786): Add React Query + Context alongside Redux
Phase 3 (This PR): Remove all Redux related code and tests and refactor data folder structure

How to test it

Make sure all existing features work as before:
Dashboard Loading: Verify courses load correctly on initial page load and the fallback screen when there are no courses.
Course Filtering: Test search, status filters, and sorting functionality.
Course Card and Actions: Test unenroll, social sharing, email settings, entitlement, banners shows correctly.
Masquerade Feature: Test admin masquerade functionality with valid/invalid users.
Select session modal: I could not test it using the UI, but unit test passes (Manual testing required here).

[openedx-webhooks]

Thanks for the pull request, @jacobo-dominguez-wgu!

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[codecov]

Codecov Report

❌ Patch coverage is 97.99666% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.86%. Comparing base (cfc8297) to head (e14a0f7).

Files with missing lines	Patch %	Lines
...components/CourseCardBanners/CertificateBanner.jsx	81.25%	3 Missing ⚠️
...Card/components/CourseCardBanners/CourseBanner.jsx	71.42%	2 Missing ⚠️
...ents/CourseCardBanners/CreditBanner/views/hooks.js	75.00%	2 Missing ⚠️
...components/CourseCardBanners/CreditBanner/hooks.js	90.00%	1 Missing ⚠️
...s/CourseCard/components/CourseCardDetails/hooks.js	88.88%	1 Missing ⚠️
...ners/CourseCard/components/CourseCardMenu/hooks.js	94.11%	1 Missing ⚠️
src/data/hooks/queryHooks.ts	93.75%	1 Missing ⚠️
src/data/hooks/queryKeys.ts	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #792      +/-   ##
==========================================
+ Coverage   97.54%   97.86%   +0.32%     
==========================================
  Files         148      146       -2     
  Lines        1302     1406     +104     
  Branches      225      301      +76     
==========================================
+ Hits         1270     1376     +106     
+ Misses         31       30       -1     
+ Partials        1        0       -1     

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