message: fix: adjust wasm build for the new CSVWriter class
diff: @@ -233,10 +233,11 @@ std::string treeFinalize(const std::string& treeStr, const std::string& refStr,
  std::string serializeToCsv(const std::string& analysisResultsStr, const std::string& delimiter) {
  const auto analysisResults = wrappedParseAnalysisResults(analysisResultsStr, "'serializeToCsv'");
  std::stringstream outputCsvStream;
  - Nextclade::CsvWriter csv{outputCsvStream, Nextclade::CsvWriterOptions{.delimiter = delimiter[0]}};
  + auto csv = Nextclade::createCsvWriter(Nextclade::CsvWriterOptions{.delimiter = delimiter[0]});
  for (const auto& result : analysisResults.results) {
  - csv.addRow(result);
  + csv->addRow(result);
  }
  + csv->write(outputCsvStream);
  return outputCsvStream.str();
  }
  