Polyfill: Fix parsing of calendar identifier from time-only string

https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalcalendarstring
ParseTemporalCalendarString specifies to try to parse the string as
TemporalDateTimeString[+Zoned], TemporalDateTimeString[~Zoned],
TemporalInstantString, TemporalTimeString, TemporalMonthDayString, and
TemporalYearMonthString consecutively until one succeeds. I always thought
TemporalTimeString would be handled by ParseISODateTime in the polyfill,
but it seems I was wrong about that.

See: #3090

polyfill/lib/ecmascript.mjs

@@ -1742,9 +1742,13 @@ export function ToTemporalCalendarIdentifier(calendarLike) {
     ({ calendar } = ParseISODateTime(identifier));
   } catch {
     try {
-      ({ calendar } = ParseTemporalYearMonthString(identifier));
+      ({ calendar } = ParseTemporalTimeString(identifier));
     } catch {
-      ({ calendar } = ParseTemporalMonthDayString(identifier));
+      try {
+        ({ calendar } = ParseTemporalYearMonthString(identifier));
+      } catch {
+        ({ calendar } = ParseTemporalMonthDayString(identifier));
+      }
     }
   }
   if (!calendar) calendar = 'iso8601';