Added safeguards to mt input generators that do not immediately work in Eager/tf.function modes. Added Eager/tf.function tests to the mt input generators that should still work.
Added safeguards to mt input generators that do not immediately work in Eager/tf.function modes.
Added Eager/tf.function tests to the mt input generators that should still work.

PiperOrigin-RevId: 446521732

tensorflow/lingvo,tensorflow/lingvo,tensorflow/lingvo,tensorflow/lingvo