演练登记时 如果没有附件 则不显示演练文件

src/views/menu/rehearsalTask/components/addRehearsalTask.vue

@@ -69,7 +69,7 @@
         placeholder="请填写演练地点"
       />
       <!-- 演练文件 -->
-      <div class="mainItem mainItemData">
+      <div class="mainItem mainItemData" v-if="studyList">
         <p class="label labelPeople">演练文件</p>
         <div>
           <div v-for="item in studyList" :key="item.name">