fix：解决后端返回null数据报错问题

src/pages/ranking.vue

@@ -110,7 +110,7 @@ onShow(async () => {
   const result = await getHomeData();
   rankData.value = result;
   handleSelect(selectedIndex.value);
-  seasonData.value = result.seasonList;
+  seasonData.value = result.seasonList || [];
   if (seasonData.value[0]) {
     seasonName.value = seasonData.value[0].seasonName;
   }