style(views/feed): 固定表头

+ 为每一个模块的`el-table`添加`height`属性使其表头固定
    + [参考](https://element-plus.org/zh-CN/component/table#%E5%9B%BA%E5%AE%9A%E8%A1%A8%E5%A4%B4)

src/views/feed/FeedList/index.vue

@@ -37,7 +37,7 @@
       <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
     </el-row>
 
-    <el-table v-loading="loading" :data="FeedListList" @selection-change="handleSelectionChange">
+    <el-table v-loading="loading" height="1000px" :data="FeedListList" @selection-change="handleSelectionChange">
       <el-table-column type="selection" width="55" align="center" />
       <!-- <el-table-column label="序号" type="index" width="60" align="center" prop="id" /> -->
       <el-table-column label="配方编号" align="center" prop="formulaId" />

src/views/feed/FeedPlan/index.vue

@@ -35,7 +35,7 @@
       <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
     </el-row>
 
-    <el-table v-loading="loading" :data="FeedPlanList" @selection-change="handleSelectionChange">
+    <el-table v-loading="loading" height="1000px" :data="FeedPlanList" @selection-change="handleSelectionChange">
       <el-table-column type="selection" width="55" align="center" />
       <el-table-column label="创建日期" align="center" prop="createDate" />
       <el-table-column label="配方编码" align="center" prop="formulaId" />

src/views/feed/FeedStatistic/index.vue

@@ -33,7 +33,7 @@
       <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
     </el-row>
 
-    <el-table v-loading="loading" :data="FeedStatisticList" @selection-change="handleSelectionChange">
+    <el-table v-loading="loading" height="1000px" :data="FeedStatisticList" @selection-change="handleSelectionChange">
       <el-table-column type="selection" width="55" align="center" />
       <el-table-column label="UID" align="center" prop="id" />
       <el-table-column label="配方编号" align="center" prop="formulaId" />

src/views/feed/FormulaList/index.vue

@@ -36,7 +36,7 @@
       <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
     </el-row>
 
-    <el-table v-loading="loading" :data="FormulaListList" @selection-change="handleSelectionChange">
+    <el-table v-loading="loading" height="1000px" :data="FormulaListList" @selection-change="handleSelectionChange">
       <el-table-column type="selection" width="55" align="center" />
       <el-table-column label="序号" align="center" prop="code" />
       <el-table-column label="配方编号" align="center" prop="formulaId" />

src/views/feed/FormulaManagement/index.vue

@@ -33,7 +33,7 @@
       <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
     </el-row>
 
-    <el-table v-loading="loading" :data="FormulaManagementList">
+    <el-table v-loading="loading" height="1000px" :data="FormulaManagementList">
       <!-- 表中表展示子配方 -->
       <el-table-column type="expand" @expand-change="handleExpandChange">
         <template #default="props">

src/views/feed/material/index.vue

@@ -75,7 +75,7 @@
       <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
     </el-row>
 
-    <el-table v-loading="loading" :data="materialList" @selection-change="handleSelectionChange">
+    <el-table v-loading="loading" height="1000px" :data="materialList" @selection-change="handleSelectionChange">
       <el-table-column type="selection" width="55" align="center" />
       <el-table-column label="原料编码" align="center" prop="materialId" />
       <el-table-column label="原料名称" align="center" prop="materialName" />

src/views/stock/out/index.vue

@@ -43,7 +43,7 @@
       <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
     </el-row>
 
-    <el-table v-loading="loading" :data="outList" @selection-change="handleSelectionChange"
+    <el-table v-loading="loading" height="1000px" :data="outList" @selection-change="handleSelectionChange"
       @sort-change="handleSortChange" ref="tableRef">
       <el-table-column type="selection" width="55" align="center" />
       <el-table-column label="序号" align="center" prop="stockOutCode" />