feat(lessons): add new lessons for english section

src/pages/student/StudentLayout.tsx

@@ -1,5 +1,5 @@
 import { Outlet, NavLink, useLocation } from "react-router-dom";
-import { Home, BookOpen, Award, User, Video, Map } from "lucide-react";
+import { Home, BookOpen, Award, User, Map, SquareLibrary } from "lucide-react";
 import { SidebarProvider } from "../../components/ui/sidebar";
 import { AppSidebar } from "../../components/AppSidebar";
 
@@ -27,7 +27,7 @@ const NAV_ITEMS = [
   },
   {
     to: "/student/lessons",
-    icon: Video,
+    icon: SquareLibrary,
     label: "Lessons",
     color: "#0891b2",
     bg: "rgba(8,145,178,0.12)",