perf: route rank is null

src/router/utils.ts

@@ -23,6 +23,7 @@ import { getAsyncRoutes } from "/@/api/routes";
 // 按照路由中meta下的rank等级升序来排序路由
 function ascending(arr: any[]) {
   arr.forEach(v => {
+    if (v?.meta?.rank === null) v.meta.rank = undefined;
     if (v?.meta?.rank === 0) {
       if (v.name !== "home" && v.path !== "/") {
         console.warn("rank only the home page can be 0");