fix: 优化 chartTepm的显示 以及 旧数据 的 valueMapping无法展开的问题

nezha-fronted/src/components/common/rightBox/chart/chartRightBox.vue

@@ -458,12 +458,20 @@ export default {
               valueMapping: false
             }
           }
+          // this.editChart.varType = 1
           if (this.editChart.param.enable.legend && !this.editChart.param.legend) {
             this.editChart.param.legend = { placement: 'bottom', values: [], show: true }
           }
           if (this.editChart.param.datasource && !this.editChart.param.datasource[0].legend) {
             this.editChart.param.datasource[0].legend = ''
           }
+          if (this.editChart.param.valueMapping) {
+            this.editChart.param.valueMapping.forEach(item => {
+              if (!item.show) {
+                item.show = false
+              }
+            })
+          }
         }
       }
     },