prevent double broadcast notification

src/components/Header/Header.tsx

@@ -25,30 +25,25 @@ function Header() {
     const notificationRef = useRef<HTMLDivElement>(null);
 
     useEffect(() => {
+        if (!user) return;
 
         updateEvent();
 
         let echoInstance: ReturnType<typeof initEcho> | null = null;
-        let channelsToLeave: string[] = [];
 
         async function initializeHeader() {
             try {
+                const echo = initEcho();
+                echoInstance = echo;
+                adminNotificationsListener(echo, user, setNotifications, setunreadNotification, updatePendingMembers);
+                userNotificationsListener(echo, user, setNotifications, setunreadNotification);
+
                 const notifData = await getUserNotifications();
 
                 const data: Notification[] = notifData || [];
                 setNotifications(data);
                 const hasUnread = data.some(n => n.pivot && n.pivot.unread === 1);
                 setunreadNotification(hasUnread);
-
-                const echo = initEcho();
-                echoInstance = echo;
-
-                const activeChannels: (string | null)[] = [
-                    adminNotificationsListener(echo, user, setNotifications, setunreadNotification, updatePendingMembers),
-                    userNotificationsListener(echo, user, setNotifications, setunreadNotification),
-                ];
-                channelsToLeave = activeChannels.filter((name): name is string => name !== null);
-
             } catch (err) {
                 console.error("Erreur initialisation Header:", err);
             }
@@ -65,13 +60,12 @@ function Header() {
                 setnotificationMenu(false);
             }
         };
-
         document.addEventListener("mousedown", handleClickOutside);
 
         return () => {
             document.removeEventListener("mousedown", handleClickOutside);
             if (echoInstance) {
-                channelsToLeave.forEach(chan => echoInstance!.leave(chan));
+                echoInstance.disconnect();
             }
         };
     }, []);