feat: add pluggable override for course home progress username obfuscation

[pwnage101]

ENT-11572

---

Related:

• feat: add pluggable override for course home progress username obfuscation #2555
• feat: replace enterprise username import in progress/views.py with pluggable_override openedx-platform#38108

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.96%. Comparing base (aeb1da0) to head (5eaad44).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2555   +/-   ##
=======================================
  Coverage   85.95%   85.96%           
=======================================
  Files         249      250    +1     
  Lines       16601    16611   +10     
  Branches     1642     1643    +1     
=======================================
+ Hits        14270    14280   +10     
  Misses       1997     1997           
  Partials      334      334           

Flag	Coverage Δ
unittests	85.96% <100.00%> (+<0.01%)	⬆️

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