Have OHE return Boolean columns

[bchen1116]

fix #2169

[codecov]

Codecov Report

Merging #2170 (bb017db) into main (3caee9e) will increase coverage by 0.1%.
The diff coverage is 100.0%.

@@            Coverage Diff            @@
##             main    #2170     +/-   ##
=========================================
+ Coverage   100.0%   100.0%   +0.1%     
=========================================
  Files         295      295             
  Lines       24376    24389     +13     
=========================================
+ Hits        24366    24379     +13     
  Misses         10       10             

Impacted Files	Coverage Δ
...components/transformers/encoders/onehot_encoder.py	100.0% <100.0%> (ø)
...alml/tests/component_tests/test_one_hot_encoder.py	100.0% <100.0%> (ø)

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[jeremyliweishih]

I think this looks great Bryan!

[freddyaboulton]

Looks good @bchen1116 !!

[dsherry]

Looks great! I love that you made this general and not specific to xgboost.

One check I'd add: assert that the right number of features has been generated. That way, if for some reason the OHE isn't generating any features at all for the bool/category inputs, the test will fail.