refactor(mes): 移除遗留演示页面工具栏功能

- 删除了工具栏按钮相关代码和布局结构
- 移除了 Element Plus 消息组件的导入
- 清理了模拟操作处理函数和相关逻辑
- 简化了页面配置和交互流程

src/views/mes/MLShow/components/LegacyDemoPage.vue

@@ -1,17 +1,5 @@
 <template>
   <div class="legacy-page">
-    <div v-if="config.toolbarActions.length" class="legacy-toolbar">
-      <el-button
-        v-for="btn in config.toolbarActions"
-        :key="btn.label"
-        :type="btn.type || 'default'"
-        size="small"
-        class="toolbar-btn"
-        @click="handleMockAction(btn.label)"
-      >
-        {{ btn.label }}
-      </el-button>
-    </div>
 
     <el-form v-if="config.filters.length" :model="queryModel" inline class="query-form" label-width="96px">
       <el-form-item v-for="item in config.filters" :key="item.key" :label="item.label">
@@ -125,7 +113,6 @@
 
 <script setup lang="ts">
 import { computed, onMounted, ref } from 'vue';
-import { ElMessage } from 'element-plus';
 import { getPageConfig } from '../data/pageConfigs';
 import type { DemoColumn } from '../types';
 
@@ -191,12 +178,6 @@ const handleReset = () => {
   loadData(false);
 };
 
-const handleMockAction = (name: string) => {
-  if (name.includes('导出')) ElMessage.success(`已模拟执行：${name}`);
-  else if (name.includes('打印')) ElMessage.success('已模拟打印预览');
-  else ElMessage.info(`已触发：${name}`);
-};
-
 const formatCell = (row: Record<string, any>, column: DemoColumn) => {
   const val = column.prop ? row[column.prop] : '';
   if (val === undefined || val === null || val === '') return '';