fix：修改explore的堆叠显示中文的问题

nezha-fronted/src/components/page/dashboard/overview/chart.vue

@@ -164,6 +164,8 @@
 
         if(this.chartType == 'line' || this.chartType == 'overviewLine'){
           this.option.xAxis.axisLabel.formatter=this.defaultXAxisFormatter;
+          this.option.toolbox.tooltip.formatter=this.defaultToolBoxFormatter;
+
           if(this.yAxisFormatter){
             this.option.yAxis.axisLabel.formatter=this.yAxisFormatter;
           }else{
@@ -351,6 +353,12 @@
         return [ month, day].join('-') + "\n"
           + [hour, minute].join(':');
       },
+      defaultToolBoxFormatter(params){
+        if(params.name==='stack'){
+          return this.$t('overall.toolBox.stack')
+        }
+        return params.title
+      },
       defaultTooltipFormatter:function(params){
         let str = `<div>`;
         params.forEach((item, i) => {

nezha-fronted/src/components/page/dashboard/overview/chartConfig.vue

@@ -38,9 +38,9 @@
         show:false,
         top:'0',
         right:'18',
-        showTitle:true,
+        showTitle:false,
         tooltip:{
-          show:false,
+          show:true,
         },
         feature:{
           dataZoom:{
@@ -54,6 +54,20 @@
             title:{}
           },
           // restore: {},
+        },
+        tooltip: { // 和 option.tooltip 的配置项相同
+          show: true,
+          position:'top',
+          formatter: function (param) {
+            debugger
+            return param.title; // 自定义的 DOM 结构
+          },
+          backgroundColor:'rgba(255,255,255,0)',
+          borderColor :'rgba(255,255,255,0)',
+          textStyle: {
+            fontSize: 12,
+            color : '#439AC6'
+          },
         }
       },
       tooltip: {