feat(dms): 更新设备巡检实例表格显示逻辑

- 在巡检标准列中添加模板作用域以支持多字段显示
- 实现当 standardName 存在时优先显示 standardName
- 当 standardName 为空时回退到显示 inspectStandard 字段
- 保持原有的溢出提示功能

src/views/dms/dmsBillsInstance/index.vue

@@ -11,7 +11,11 @@
         <el-table-column label="序号" type="index" width="60" align="center" />
         <el-table-column label="设备编码" align="center" prop="deviceCode" />
         <el-table-column label="设备名称" align="center" prop="deviceName" />
-        <el-table-column label="巡检标准" align="center" prop="inspectStandard" show-overflow-tooltip />
+        <el-table-column label="巡检标准" align="center" prop="inspectStandard" show-overflow-tooltip>
+          <template slot-scope="scope">
+            <span>{{ scope.row.standardName || scope.row.inspectStandard }}</span>
+          </template>
+        </el-table-column>
         <el-table-column label="检查结果" align="center" width="180">
           <template slot-scope="scope">
             <span v-if="scope.row.instanceDetailStatus === '3'" :style="{color: scope.row.inspectStatus === '1' ? '#67C23A' : '#F56C6C'}">