test: update stop cleanup harness for iCloud abort helper

tests/background-stop-gap-record.test.js

@@ -162,6 +162,7 @@ const chrome = {
 };
 
 function cancelPendingCommands() {}
+function abortActiveIcloudRequests() {}
 function getPendingAutoRunTimerPlan() {
   return null;
 }

tests/step8-stop-cleanup.test.js

@@ -138,6 +138,7 @@ const stepWaiters = new Map();
 let resumeWaiter = null;
 
 function cancelPendingCommands() {}
+function abortActiveIcloudRequests() {}
 async function addLog() {}
 async function broadcastStopToContentScripts() {}
 async function markRunningStepsStopped() {}