feat: migrate enterprise customer business logic to the BFF layer

[brobro10000]

Utilizes the BFF layer for metadata related to the enterprise customer metadata with the following serializer response update for the BFF layer within enterprise access (PR).

This PR also acts as a full cutover for the BFF layer in terms of removing any waffle or MFE config based flagging for the BFF API call. This PR refactors logic such that the determination for a BFF API call is solely dependent on the user's current route and deprecates all BFF related feature flags.

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

[codecov]

Codecov Report

Attention: Patch coverage is 81.39535% with 16 lines in your changes missing coverage. Please review.

Project coverage is 89.69%. Comparing base (64030b7) to head (633414d).
Report is 15 commits behind head on master.

Files with missing lines	Patch %	Lines
src/components/app/routes/data/utils.js	70.37%	7 Missing and 1 partial ⚠️
src/components/academies/data/academyLoader.ts	50.00%	1 Missing ⚠️
src/components/course/data/courseLoader.ts	50.00%	1 Missing ⚠️
...ts/course/routes/externalCourseEnrollmentLoader.ts	50.00%	1 Missing ⚠️
src/components/dashboard/data/dashboardLoader.ts	50.00%	1 Missing ⚠️
src/components/microlearning/data/videosLoader.ts	50.00%	1 Missing ⚠️
...nts/program-progress/data/programProgressLoader.ts	66.66%	1 Missing ⚠️
src/components/program/data/programLoader.ts	50.00%	1 Missing ⚠️
src/components/search/data/searchLoader.ts	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1263      +/-   ##
==========================================
+ Coverage   89.59%   89.69%   +0.10%     
==========================================
  Files         405      406       +1     
  Lines        8824     8833       +9     
  Branches     2064     2074      +10     
==========================================
+ Hits         7906     7923      +17     
+ Misses        883      877       -6     
+ Partials       35       33       -2     

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[adamstankiewicz]

LGTM , with some nits.

[adamstankiewicz]

Interesting, nice!