Bug 1683061 - When importing calendar items, hide white-space-only descriptions. r=lasana

Differential Revision: https://phabricator.services.mozilla.com/D100065

--HG--
extra : rebase_source : 4acd02ffc94e2db4e9e8ef3d55e318ceb99648d3
extra : amend_source : a9dcbaa8da73b8d4cd6a133716f9d49bab7ec67e

calendar/base/content/widgets/calendar-item-summary.js

@@ -481,7 +481,7 @@
         this.updateStatus(status, isToDoItem);
       }
 
-      let description = item.getProperty("DESCRIPTION");
+      let description = item.getProperty("DESCRIPTION")?.trim();
       if (description) {
         this.updateDescription(description);
       }