fix : 上传文件表格滚动时, 表头固定

src/components/DetailComponent/FileComponent.vue

@@ -2,7 +2,7 @@
   <el-form :label-position="labelAlign">
     <el-form-item :label="title?'其他文件':''" v-if="fileListShow === 'READ' || fileListShow === 'EDIT'" :label-position="labelAlign" :label-width="title?95:''">
       <file-upload @getFile="getOtherFile" v-if="fileListShow === 'EDIT'"/>
-      <fvTable style="width: 100%;max-height: 300px;" v-if="processViewer" :tableConfig="tableConfig"
+      <fvTable style="width: 100%;max-height: 300px;" v-if="processViewer"  height="300" :tableConfig="tableConfig"
               :data="_value" :isSettingCol="false" :pagination="false">
         <template #empty>
           <el-empty :image-size="90" description="暂无数据" style="padding: 0"/>
@@ -51,7 +51,6 @@ const tableConfig = reactive({
       label: '序号',
       align: 'center',
       width: 85,
-      fixed:true
     },
     {
       prop: 'originalFileName',