Bug 1906863 - Fix typo on junkCommands.js. r=freaktechnik

Differential Revision: https://phabricator.services.mozilla.com/D216037

--HG--
extra : amend_source : 852851ff515053e95310824ff01ec0ec73dc917f

mailnews/base/content/junkCommands.js

@@ -108,7 +108,7 @@ async function performActionsOnJunkMsgs(aFolder, aJunkMsgHdrs, aGoodMsgHdrs) {
       QueryInterface: ChromeUtils.generateQI(["nsIMsgCopyServiceListener"]),
       onStartCopy() {},
       onProgress() {},
-      aetMessageKey() {},
+      setMessageKey() {},
       getMessageId() {
         return null;
       },