Fix: Format history data and threshold values to two decimal places for better readability

src/pages/Alarm/components/topoDetail.jsx

@@ -340,11 +340,11 @@ const TopoDetail = (props) => {
 
     const seriesData = historyData.map((point) => {
       // 转换为百分比显示
-      return point.value;
+      return point.value.toFixed(2);
     });
 
     // 阈值也转换为百分比
-    const thresholdValue = threshold;
+    const thresholdValue = threshold.toFixed(2);
 
     // 配置数据点样式
     newData.series[0] = {