fix: add missing useRef import

src/components/cart/CartDrawer.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useState } from "react";
+import { useEffect, useState, useRef } from "react";
 import { motion, AnimatePresence } from "framer-motion";
 import Image from "next/image";
 import Link from "next/link";