Fix issue where with `RaggedTensor.__repr__`, where `repr(tf.RaggedTensor.from_row_lengths(tf.zeros([9, 0]), [4, 3, 2]))` contained "[]" instead of "[[], [], []]".
Fix issue where with `RaggedTensor.__repr__`, where `repr(tf.RaggedTensor.from_row_lengths(tf.zeros([9, 0]), [4, 3, 2]))` contained "[]" instead of "[[], [], []]".

PiperOrigin-RevId: 436829775

tensorflow/text,tensorflow/text,tensorflow/text