fix: Add TreatmentCol Type check at the very beginning

[dylanw-oss]

What changes are proposed in this pull request?

If customer's dataset Treatment column is boolean type, it will throw exception now due to residual computation can't be performed on boolean data type. This change is to convert it to integer type internally.

[github-actions]

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[dylanw-oss]

/azp run

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[codecov-commenter]

Codecov Report

Merging #1816 (e787867) into master (fb47138) will decrease coverage by 10.76%.
The diff coverage is 71.42%.

@@             Coverage Diff             @@
##           master    #1816       +/-   ##
===========================================
- Coverage   86.80%   76.04%   -10.76%     
===========================================
  Files         295      295               
  Lines       15387    15396        +9     
  Branches      777      794       +17     
===========================================
- Hits        13356    11708     -1648     
- Misses       2031     3688     +1657     

Impacted Files	Coverage Δ
.../azure/synapse/ml/causal/ResidualTransformer.scala	89.18% <70.00%> (-4.57%)	⬇️
...ft/azure/synapse/ml/causal/DoubleMLEstimator.scala	91.46% <75.00%> (-0.85%)	⬇️
...m/src/main/scala/com/microsoft/lightgbm/SWIG.scala	0.00% <0.00%> (-100.00%)	⬇️
...pse/ml/lightgbm/params/ClassifierTrainParams.scala	0.00% <0.00%> (-100.00%)	⬇️
...e/synapse/ml/lightgbm/StreamingPartitionTask.scala	0.00% <0.00%> (-97.11%)	⬇️
...zure/synapse/ml/lightgbm/dataset/SampledData.scala	0.00% <0.00%> (-90.00%)	⬇️
...ure/synapse/ml/cognitive/speech/AudioStreams.scala	0.00% <0.00%> (-87.88%)	⬇️
...e/synapse/ml/cognitive/search/AzureSearchAPI.scala	2.59% <0.00%> (-87.02%)	⬇️
...azure/synapse/ml/lightgbm/LightGBMClassifier.scala	10.75% <0.00%> (-80.65%)	⬇️
...zure/synapse/ml/cognitive/search/AzureSearch.scala	9.28% <0.00%> (-77.86%)	⬇️
... and 57 more

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[dylanw-oss]

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[dylanw-oss]

/azp run

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[dylanw-oss]

/azp run

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