Add the ability for the bucketize numeric features extractor and the calculate s2 cell id extractor to handle features that contain sparse tensor values.
Add the ability for the bucketize numeric features extractor and the calculate s2 cell id extractor to handle features that contain sparse tensor values.

PiperOrigin-RevId: 358005441

tensorflow/model-analysis,tensorflow/model-analysis,tensorflow/model-analysis,tensorflow/model-analysis