message: fix: attempt to fix tsv extension on chrome mac
  By using the rare 'text/tab-separated-values' mime type
diff: @@ -261,7 +261,7 @@ export function* exportCsv() {
  export function* exportTsv() {
  const results = yield* select(selectResults)
  const str = yield* call(serializeResultsToCsv, results, '\t')
  - saveFile(str, EXPORT_TSV_FILENAME, 'text/csv;charset=utf-8')
  + saveFile(str, EXPORT_TSV_FILENAME, 'text/tab-separated-values;charset=utf-8')
  }
  export function* exportJson() {
  