fix: call ui imorovements (#2749)

* fix member button tooltip in call room header

* hide sticker button in room input based on chat window width

* render camera on off data instead of duplicate join messages

* hide duplicate call member changes instead of rendering as video status

* fix prescreen message spacing

src/app/features/room/RoomTimeline.tsx

@@ -1475,7 +1475,13 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
         const senderId = mEvent.getSender() ?? '';
         const senderName = getMemberDisplayName(room, senderId) || getMxIdLocalPart(senderId);
 
-        const callJoined = mEvent.getContent<SessionMembershipData>().application;
+        const content = mEvent.getContent<SessionMembershipData>();
+        const prevContent = mEvent.getPrevContent();
+
+        const callJoined = content.application;
+        if (callJoined && 'application' in prevContent) {
+          return null;
+        }
 
         const timeJSX = (
           <Time