Refactor saved_model.py to make it easier to comment out blocks of related code to identify problems. Also moved out the vocab for Wordpiece due to a tf bug.
Refactor saved_model.py to make it easier to comment out blocks of related code to identify problems. Also moved out the vocab for Wordpiece due to a tf bug.

PiperOrigin-RevId: 352093814

tensorflow/text,tensorflow/text,tensorflow/text