fix: 修复npm overview 折线图数据为空时 No data 占位错误问题

src/views/charts2/charts/dnsInsight/DnsTrafficLine.vue

@@ -207,8 +207,9 @@ export default {
               { analysis: {}, name: 'network.inbound', class: 'inbound', show: true, invertTab: true, positioning: 1, data: [], unitType: '' },
               { analysis: {}, name: 'network.outbound', class: 'outbound', show: true, invertTab: true, positioning: 2, data: [], unitType: '' }
             ]
-          }
+          } else {
             this.initData(res.data.result, val, active, show)
+          }
         } else {
           this.isNoData = false
           this.showError = true

src/views/charts2/charts/linkMonitor/LinkTrafficLine.vue

@@ -187,8 +187,9 @@ export default {
               { analysis: {}, name: 'linkMonitor.ingress', class: 'ingress', show: true, invertTab: true, positioning: 1, data: [], unitType: '' },
               { analysis: {}, name: 'linkMonitor.egress', class: 'egress', show: true, invertTab: true, positioning: 2, data: [], unitType: '' }
             ]
-          }
+          } else {
             this.initData(res.data.result, val, active, show)
+          }
         } else {
           this.showError = true
           this.errorMsg = res.message

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

@@ -221,8 +221,9 @@ export default {
               { analysis: {}, name: 'network.through', class: 'through', show: true, invertTab: true, positioning: 4, data: [], unitType: '' },
               { analysis: {}, name: 'network.other', class: 'other', show: true, invertTab: true, positioning: 5, data: [], unitType: '' }
             ]
-          }
+          } else {
             this.initData(res.data.result, val, active, show, n)
+          }
         } else {
           this.showError = true
           this.errorMsg = res.message

src/views/charts2/charts/npm/NpmTrafficLine.vue

@@ -215,8 +215,9 @@ export default {
                 { name: this.$t('networkAppPerformance.packetLoss'), show: true, positioning: 0, data: [], unitType: unitTypes.percent, index: 3 },
                 { name: this.$t('overall.packetRetrans'), show: true, positioning: 0, data: [], unitType: unitTypes.percent, index: 4 }
               ]
-            }
+            } else {
               this.initData(res.data.result, val)
+            }
           } else {
             this.isNoData = false
             this.showError = true
@@ -240,6 +241,10 @@ export default {
           res.forEach(item => {
             if (item.code === 200) {
               npmLineData.push(...item.data.result)
+            } else {
+              this.isNoData = false
+              this.showError = true
+              this.errorMsg = res.message
             }
           })
           this.showError = false
@@ -260,8 +265,9 @@ export default {
               { name: this.$t('networkAppPerformance.packetLoss'), show: true, positioning: 0, data: [], unitType: unitTypes.percent, index: 3 },
               { name: this.$t('overall.packetRetrans'), show: true, positioning: 0, data: [], unitType: unitTypes.percent, index: 4 }
             ]
-          }
+          } else {
             this.initData(npmLineData, val)
+          }
         }).catch(e => {
           this.isNoData = false
           this.showError = true