message: changed unnestNull to SetCardinality
diff: @@ -238,7 +238,7 @@ OperatorResultType PhysicalUnnest::Execute(ExecutionContext &context, DataChunk
  if (state.list_data.data[col_idx].GetType() == LogicalType::SQLNULL) {
  // UNNEST(NULL)
  - UnnestNull(0, this_chunk_len, result_vector);
  + chunk.SetCardinality(0);
  } else {
  auto &vdata = state.list_vector_data[col_idx];
  auto &child_data = state.list_child_data[col_idx];
  