NEZ-2052 feat：编辑页面column, value mapping支持调整顺序

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

@@ -503,7 +503,7 @@
                 <i class="nz-icon nz-icon-arrow-down" :class="item.show?'':'is-active'" @click="showColumns(index)"></i>
                 <span v-show="!item.show" class="title-content-left">
                   <span>
-                    {{item.value}}
+                    {{item.title}}
                   </span>
                 </span>
               </span>
@@ -565,7 +565,7 @@
               </el-row>
             </transition-group>
           </div>
-         </draggable>
+        </draggable>
         <div @click="addColumns" class="thresholds-add">
           {{$t('overall.addColumns')}}
         </div>