Load Chart Data via Build-Time Data Loaders

[trobanga]

Closes #3997

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.46%. Comparing base (56b42e8) to head (35aa1c8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4063      +/-   ##
==========================================
+ Coverage   96.45%   96.46%   +0.01%     
==========================================
  Files         437      437              
  Lines       27457    27457              
  Branches      630      629       -1     
==========================================
+ Hits        26483    26486       +3     
+ Misses        470      467       -3     
  Partials      504      504              

see 2 files with indirect coverage changes

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