Add input validation for the DatasetExplorer class and functions

[fealho]

CU-86b7a4r6a, Resolve #474

[sdv-team]

Task linked: CU-86b7a4r6a SDGym - Add input validation for the DatasetExplorer class and functions #474

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.27%. Comparing base (3019c0b) to head (e4c3aa1).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #499      +/-   ##
==========================================
+ Coverage   76.10%   76.27%   +0.16%     
==========================================
  Files          30       30              
  Lines        2377     2394      +17     
==========================================
+ Hits         1809     1826      +17     
  Misses        568      568              

Flag	Coverage Δ
integration	61.73% <71.42%> (+0.06%)	⬆️
unit	70.92% <100.00%> (+0.20%)	⬆️

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