improve estimator checks

[kulbachcedric]

No description provided.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 98.27586% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.35%. Comparing base (9abeb0b) to head (3cbdb0c).

Files with missing lines	Patch %	Lines
deep_river/utils/estimator_checks.py	98.18%	2 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #174      +/-   ##
==========================================
+ Coverage   82.57%   83.35%   +0.78%     
==========================================
  Files          27       27              
  Lines        2089     2097       +8     
==========================================
+ Hits         1725     1748      +23     
+ Misses        364      349      -15     

Files with missing lines	Coverage Δ
deep_river/base.py	85.23% <100.00%> (-0.71%)	⬇️
deep_river/utils/estimator_checks.py	72.29% <98.18%> (+5.26%)	⬆️

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[codspeed]

Merging this PR will not alter performance

✅ 75 untouched benchmarks

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_{Comparing 162-fix-saving-and-loading (3cbdb0c) with main (9abeb0b)}