Adding support for `tf.SparseTensorValue` and `tf.SparseTensor` as inputs and outputs for

various `tf.data` operations. In particular:
- adding support for `tf.SparseTensorValue` as output type of `tf.data.Dataset.map()`.
- adding support for both `tf.SparseTensor` and `tf.SparseTensorValue` as inputs to `tf.data.from_tensors()`.
- adding support for both `tf.SparseTensor` and `tf.SparseTensorValue` as inputs to `tf.data.from_tensor_slices()`.

PiperOrigin-RevId: 177175439