feat: 仪表盘默认刷新时间调整为5分钟

frontend/src/components/canvas/components/Editor/Preview.vue

@@ -111,7 +111,7 @@ export default {
       })
     })
     // 数据刷新计时器
-    let refreshTime = 60000
+    let refreshTime = 300000
     if (this.canvasStyleData.refreshTime && this.canvasStyleData.refreshTime > 0) {
       refreshTime = this.canvasStyleData.refreshTime * 1000
     }