docs: expose documentation for all utilities

[ST-DDT]

Extension of #3221

• docs: expose documentation for randomizers #3221

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Treats all functions inside the utils folder as public utilities that need documentation.

Also adds a test to ensure that the elements don't change unexpectedly.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.95%. Comparing base (467bd83) to head (61d6bf4).
Report is 1 commits behind head on next.

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #3242      +/-   ##
==========================================
- Coverage   99.97%   99.95%   -0.02%     
==========================================
  Files        2806     2806              
  Lines      217144   217144              
  Branches      979      974       -5     
==========================================
- Hits       217081   217052      -29     
- Misses         63       92      +29     

see 2 files with indirect coverage changes

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[xDivisionByZerox]

I'm fine with the change in general. I'm unsure whether including all function in the snapshot is necessary. 🤔
This concern is not blocking, tho.

[ST-DDT]

I'm unsure whether including all function in the snapshot is necessary. 🤔

I don't think it is necessary either, but currently we don't have any tests that cover the completeness of the docs generation.
This is my attempt to cover this. (I did start with just the utilities module at first, but picking that from the page list is harder than just checking the whole set.)