Update calls to addEventToTimeline and addLiveEvents for new signature

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

test/unit-tests/stores/MemberListStore-test.ts

@@ -202,6 +202,7 @@ describe("MemberListStore", () => {
 function addEventToRoom(room: Room, ev: MatrixEvent) {
     room.getLiveTimeline().addEvent(ev, {
         toStartOfTimeline: false,
+        addToState: true,
     });
 }