[refactor] Add changes from reg-cocktal

[nabenabe0928]

Some small changes from reg-cocktail.

[codecov[bot]]

Codecov Report

Merging #399 (7fd5fd3) into development (048656e) will decrease coverage by 0.02%. The diff coverage is 100.00%.

@@               Coverage Diff               @@
##           development     #399      +/-   ##
===============================================
- Coverage        84.15%   84.13%   -0.03%     
===============================================
  Files              175      175              
  Lines            10169    10167       -2     
  Branches          1747     1745       -2     
===============================================
- Hits              8558     8554       -4     
- Misses            1112     1114       +2     
  Partials           499      499              

Impacted Files	Coverage Δ
autoPyTorch/data/base_feature_validator.py	100.00% <100.00%> (ø)
autoPyTorch/data/tabular_feature_validator.py	93.14% <100.00%> (+1.00%)	:arrow_up:
...re_preprocessing/SelectPercentileClassification.py	89.47% <0.00%> (-5.27%)	:arrow_down:
...orch/pipeline/components/training/metrics/utils.py	87.50% <0.00%> (-2.50%)	:arrow_down:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 048656e...7fd5fd3. Read the comment docs.

[nabenabe0928]

Check:

• test/test_pipeline/test_tabular_regression.py::TestTabularRegression::test_pipeline_predict[regression_numerical_only]
• test/test_pipeline/components/preprocessing/test_feature_preprocessor.py::TestFeaturePreprocessors::test_pipeline_fit_include[Nystroem-classification_numerical_and_categorical]