fix iso-field minification issue

Author: arshaw

packages/temporal-polyfill/scripts/bundle.js

@@ -377,5 +377,17 @@ async function readTemporalReservedWords(pkgDir) {
       'resolvedOptions',
       'useGrouping',
       'relatedYear',
+
+      // previously in getISOFields(), but that was removed
+      // TODO: THIS IS NOT A VERY GOOD SYSTEM
+      'isoYear',
+      'isoMonth',
+      'isoDay',
+      'isoHour',
+      'isoMinute',
+      'isoSecond',
+      'isoMillisecond',
+      'isoMicrosecond',
+      'isoNanosecond',
     ])
 }