style(mobile/promotion): 修复底部操作菜单出现挡住内容底部的问题

src/mobile/views/promotion/plan/index/index.vue

@@ -10,7 +10,8 @@
     <van-pull-refresh v-model="refreshLoading"
       :pull-distance="100"
       success-text="刷新成功"
-      @refresh="onRefresh">
+      @refresh="onRefresh"
+      :class="{safe_bottom: showSelect}">
       <van-list v-model:loading="loading"
         :finished="finished"
         :immediate-check="false"
@@ -248,6 +249,13 @@ const clickDelSome = () => {
     background: #f5f5f5;
     min-height: 100vh;
 
+    .van-pull-refresh{
+      /* 并列选择身上的类名 */
+      &.safe_bottom{
+        padding-bottom: 50px; 
+      }
+    }
+
     .van-list {
       min-height: 100vh;