feat: Add API support for audit upgradable course via learner credit

[brobro10000]

Introduces API integration for learner credit based redemptions for the audit -> upgrade enrollment flow.
Refactors related API calls in the useCourseUpgradeData to React Query. This allows us to remove the class based CourseService component.

Conditionally calls APIs based on subsidy redeemability for course upgrades.
Ex. If a subscription based subsidy is applicable for the upgrade flow, it will not call the coupons or can-redeem API.

Suspends the CourseSection with a fallback skeleton component for longer API calls. (see video)
https://github.com/openedx/frontend-app-learner-portal-enterprise/assets/82611798/a4f20b46-8399-4084-9f6a-1dee359e4466

Tickets: https://2u-internal.atlassian.net/browse/ENT-9068 , https://2u-internal.atlassian.net/browse/ENT-9062

For all changes

• Ensure adequate tests are in place (or reviewed existing tests cover changes)
• Ensure English strings are marked for translation. See documentation for more details.

Only if submitting a visual change

• Ensure to attach screenshots
• Ensure to have UX team confirm screenshots

[brobro10000]

unused variable

[codecov]

Codecov Report

Attention: Patch coverage is 95.29412% with 4 lines in your changes missing coverage. Please review.

Project coverage is 86.35%. Comparing base (4bffff7) to head (78bd5f2).

Files	Patch %	Lines
...oard/main-content/course-enrollments/data/hooks.js	88.88%	3 Missing ⚠️
...s/app/data/hooks/useCanUpgradeWithLearnerCredit.js	92.30%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1101      +/-   ##
==========================================
+ Coverage   86.04%   86.35%   +0.31%     
==========================================
  Files         378      378              
  Lines        7803     7785      -18     
  Branches     1872     1909      +37     
==========================================
+ Hits         6714     6723       +9     
+ Misses       1035     1010      -25     
+ Partials       54       52       -2     

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[brobro10000]

Removed duplicate constants that existed at the src level directory. Refactored usage of COURSE_MODES to COURSE_MODES_MAP

[kiram15]

Looks good to me imho!

[kiram15]

I'm confused on how logError would be called if the status code is 404 when logerror is under a check that makes sure it isn't that.

    if (getErrorResponseStatusCode(error) !== 404) {
      logError(error);
    }

[brobro10000]

Thats a great question. So for the getErrorResponseStatusCode function, were directly mocking the return value of the tests defined httpStatusCode. I am not 100% sure how the status code errors are set. I think the main intent of the test and others like it is to show that we are logging an error only on status codes that aren't 404s. But I'll look into a better strategy to more accurately represent this and other mock API calls with the correct rejected httpStatusCode. 👍🏽

[kiram15]

Based on the ticket, I expected to see an API call to license-subsidy that should be removed?

[brobro10000]

There are a couple parts of the PR that addresses that ask.
The first is the consuming hook which called courseService.fetchUserLicenseSubsidy().
We are removing this call to transform existing data from the useSubscriptions hook which contains all the necessary data that came from the previous courseService.fetchUserLicenseSubsidy() api call. That also allowed us to remove the CourseService class component altogether since no other components were consuming the component.