event.isRecurring() does not repeat with RECURRENCE-ID without RANGE

Evolution creates instances of events, which contain RRULE and RECURRENCE-ID
without RANGE parameter.  Since the RANGE is not THISANDFUTURE, but absent,
such events do not recur.

https://gitlab.gnome.org/GNOME/evolution/-/issues/1180

lib/ical/event.js

@@ -283,13 +283,18 @@ ICAL.Event = (function() {
     },
 
     /**
-     * Checks if the event is recurring
+     * Checks if the event is recurring, thus has an RRULE or RDATE property, or a
+     * RECURRENCE-ID with the respective RANGE parameter.
      *
      * @return {Boolean}        True, if event is recurring
      */
     isRecurring: function() {
-      var comp = this.component;
-      return comp.hasProperty('rrule') || comp.hasProperty('rdate');
+        var comp = this.component, recurrenceId;
+        if (comp.hasProperty('rrule') || comp.hasProperty('rdate')) {
+            recurrenceId = comp.getFirstProperty('recurrence-id');
+            return !recurrenceId || !!recurrenceId.getParameter('range');
+        }
+        return false;
     },
 
     /**