修复二级菜单展开后，菜单长度样式超长的问题

Signed-off-by: 檀淮南 <coder_nai@163.com>

smart-admin-web-javascript/src/layout/components/side-expand-menu/recursion-menu.vue

@@ -14,6 +14,7 @@
       <span class="ant-menu">{{ topMenu.menuName }}</span>
     </div>
     <!-- 次级菜单展示 -->
+    <div class="bottom-menu">
       <a-menu  :selectedKeys="selectedKeys" :openKeys="openKeys" mode="inline">
         <template v-for="item in topMenu.children" :key="item.menuId">
           <template v-if="item.visibleFlag">
@@ -32,6 +33,7 @@
         </template>
       </a-menu>
     </div>
+  </div>
 </template>
 <script setup>
   import { ref } from 'vue';
@@ -84,10 +86,15 @@
 </script>
 <style scoped lang="less">
   .recursion-container {
-    height: 100%;
+    height: 100vh;
     background: #ffffff;
   }
-
+  .bottom-menu{
+    overflow: auto;
+    display: flex;
+    height: 90%;
+    color: #515a6e;
+  }
   .top-menu {
     overflow: hidden;
     display: flex;