fix: 订阅流量信息中无用量时 不展示

Author: xream

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store-front-end",
-  "version": "2.15.76",
+  "version": "2.15.77",
   "private": true,
   "scripts": {
     "dev": "vite --host",

src/components/SubListItem.vue

@@ -447,7 +447,7 @@ const flow = computed(() => {
         firstLine: t("subPage.subItem.noFlow"),
         secondLine: ``,
       };
-    } else if (target.status === "success") {
+    } else if (target.status === "success" && target.data?.usage) {
       let {
         planName,
         appUrl,