fix(图表): 修复地图图表的高级配置中，地名映射输入框为允许为空的问题

core/core-frontend/src/views/chart/components/editor/editor-senior/components/MapMapping.vue

@@ -107,7 +107,8 @@ const finishEdit = () => {
     }, {})
   }
   const oldMappedName = areaNameMap[curOriginName.value]
-  if (oldMappedName === curMappedName.value) {
+  if (!curMappedName.value || oldMappedName === curMappedName.value) {
+    curMappedName.value = oldMappedName
     return
   }
   areaNameMap[curOriginName.value] = curMappedName.value

core/core-frontend/src/views/chart/components/js/panel/charts/map/map.ts

@@ -150,7 +150,7 @@ export class Map extends L7PlotChartView<ChoroplethOptions, Choropleth> {
             .map(key => f.properties[key])
             .filter(Boolean)
             .join('@')
-          if (isEmpty(names)) {
+          if (isEmpty(names) || !gadmName) {
             return true
           }
           return names.replace(/@[^@]*$/, '') === gadmName