fix:【仪表板】图表明细数据下载数值为0不显示问题

frontend/src/components/canvas/custom-component/UserViewDialog.vue

@@ -43,7 +43,7 @@ export default {
       debugger
       const excelHeader = JSON.parse(JSON.stringify(this.chart.data.fields)).map(item => item.name)
       const excelHeaderKeys = JSON.parse(JSON.stringify(this.chart.data.fields)).map(item => item.dataeaseName)
-      const excelData = JSON.parse(JSON.stringify(this.chart.data.tableRow)).map(item => excelHeaderKeys.map(i => item[i] || ''))
+      const excelData = JSON.parse(JSON.stringify(this.chart.data.tableRow)).map(item => excelHeaderKeys.map(i => item[i]))
       const excelName = this.chart.name
       export_json_to_excel(excelHeader, excelData, excelName)
     }