bench: multi_group_by cases to exercise List

[mzabaluev]

Benchmark to accompany #23648.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.57%. Comparing base (5e168c9) to head (7118b24).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #24824      +/-   ##
==========================================
- Coverage   81.58%   81.57%   -0.01%     
==========================================
  Files        1123     1123              
  Lines      406610   406610              
  Branches   406610   406610              
==========================================
- Hits       331720   331709      -11     
- Misses      55452    55460       +8     
- Partials    19438    19441       +3     

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[rluvaton]

Thanks