fix: greeting page

pages/mine/mine.vue

@@ -160,6 +160,12 @@ const handleLogind = async () => {
 };
 
 const navTo = (page) => {
+  if (!isLoggedIn.value) {
+    loginPopupRef.value.open();
+    uni.showToast({ title: "请先登录", icon: "none" });
+    return;
+  }
+
   if (page === "greetings") {
     uni.navigateTo({
       url: "/pages/mine/greeting",