fix 处理overlay遮罩锁定无法滚动问题

 <!--
  * @Date: 2022-06-20 11:35:50
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2022-06-20 16:51:47
+ * @LastEditTime: 2022-06-20 17:03:32
  * @FilePath: /tswj/src/components/LocalismBox/index.vue
  * @Description: 调整作品方言弹框组件
 -->
 <template>
-  <van-overlay :show="show" z-index="1000">
+  <van-overlay :show="show" z-index="1000" :lock-scroll="false">
     <div class="wrapper" @click.stop>
       <div class="block">
         <div class="close">
@@ -200,8 +200,8 @@ const handleSubmit = () => { // 提交选择方言
 }
 .localism-list {
   margin-top: 2rem;
-  max-height: 20rem;
-  overflow: auto;
+  height: 20rem;
+  overflow: scroll;
 }
 
 .bar {