refactor: simplify user profile rendering in Header component

app/src/components/layout/sidebarRight/Header.tsx

@@ -42,15 +42,13 @@ const Header: React.FC = () => {
               <div className="other-guest">+{guestUsers.length - 3}</div>
             )}
             {guestUsers.slice(0, 3).map((user, index) => (
-              <>
-                <div
-                  key={index}
-                  className="user-profile"
-                  style={{ background: getAvatarColor(index) }}
-                >
-                  {user.userName[0]}
-                </div>
-              </>
+              <div
+                key={index}
+                className="user-profile"
+                style={{ background: getAvatarColor(index) }}
+              >
+                {user.userName[0]}
+              </div>
             ))}
           </div>
           <div className="user-profile-container">