message: Fix data type attr name of Size op in graph_properties.
  Data type attr name is set to T, but it's out_type.
diff: @@ -1041,7 +1041,7 @@ class SymbolicShapeRefiner {
  // Propagate size value.
  int64 sz = ic->Value(size);
  bool valid = false;
  - if (node.attr().at("T").type() == DT_INT32) {
  + if (node.attr().at("out_type").type() == DT_INT32) {
  if (sz < std::numeric_limits<int32>::max()) {
  const_tensors_to_propagate_.push_back(
  MakeIntegerScalarTensorProto(DT_INT32, sz));
  