将单据的批次操作下拉框改为默认显示

jshERP-web/src/views/system/InOutItemList.vue

@@ -38,7 +38,7 @@
         <!-- 操作按钮区域 -->
         <div class="table-operator"  style="margin-top: 5px">
           <a-button v-if="btnEnableList.indexOf(1)>-1" @click="handleAdd" type="primary" icon="plus">新增</a-button>
-          <a-dropdown v-if="selectedRowKeys.length > 0">
+          <a-dropdown>
             <a-menu slot="overlay">
               <a-menu-item key="1" v-if="btnEnableList.indexOf(1)>-1" @click="batchDel"><a-icon type="delete"/>删除</a-menu-item>
             </a-menu>