Update test

Author: t3chguy

spec/integ/matrix-client-event-timeline.spec.ts

@@ -1274,6 +1274,7 @@ describe("MatrixClient event timelines", function () {
             THREAD_ROOT.event_id,
             THREAD_REPLY.event_id,
             THREAD_REPLY2.getId(),
+            THREAD_ROOT_REACTION.getId(),
             THREAD_REPLY3.getId(),
         ]);
     });