refactor(ems): 停机判断超过2小时改成4小时

- 将 oneHourMs常量的值从 2小时调整为 4 小时
- 此修改影响电流蒸汽曲线报表的数据处理逻辑

src/views/ems/report/currentSteamCurve/index.vue

@@ -484,7 +484,7 @@ export default {
       const markPoints = []
       const markAreas = []
       const powerOutages = []
-      const oneHourMs = 2 * 60 * 60 * 1000 // 1小时的毫秒数
+      const oneHourMs = 4 * 60 * 60 * 1000 // 4小时的毫秒数
 
       // 遍历并处理数据
       for (let i = 0; i < sortedData.length; i++) {
@@ -576,7 +576,7 @@ export default {
 
       // 进一步过滤掉 NaN 值
       const validNumericValues = validValues.filter(v => !isNaN(v));
-      const average = validNumericValues.length > 0 ? 
+      const average = validNumericValues.length > 0 ?
         (validNumericValues.reduce((a, b) => a + b, 0) / validNumericValues.length).toFixed(2) : 0
 
       return {