CN-1314 fix: Network Overview删除所有供应商和应用统计后刷新页面，此区域页面一直在加载中，且Add按钮无法点击

src/views/charts2/charts/networkOverview/NetworkOverviewApps.vue

@@ -237,6 +237,8 @@ export default {
         prevRequest = axios.get(api.netWorkOverview.applicationCycleTrafficTotal, { params: params })
         request = axios.get(api.netWorkOverview.applicationTrafficAnalysis, { params: params })
         this.handleData(prevRequest, request, 'app')
+      } else {
+        this.toggleLoading(false)
       }
       if (providerCards.length > 0) {
         params = {
@@ -249,6 +251,8 @@ export default {
         prevRequest = axios.get(api.netWorkOverview.appCompanyCycleTrafficTotal, { params: params })
         request = axios.get(api.netWorkOverview.appCompanyTrafficAnalysis, { params: params })
         this.handleData(prevRequest, request, 'provider')
+      } else {
+        this.toggleLoading(false)
       }
     },
     handleData (prevRequest, request, _t) {