feat(editor): 优化数据源字段选择器交互

packages/ui-react/src/iterator-container/src/formConfig.ts

@@ -23,17 +23,15 @@ export default [
     text: '数据源数据',
     value: 'value',
     dataSourceFieldType: ['array'],
-    checkStrictly: false,
+    checkStrictly: true,
     type: 'data-source-field-select',
     onChange: (vm: any, v: string[] = [], { model }: any) => {
-      if (Array.isArray(v)) {
+      if (Array.isArray(v) && v.length > 1) {
         const [dsId, ...keys] = v;
         model.dsField = [dsId.replace(DATA_SOURCE_FIELDS_SELECT_VALUE_PREFIX, ''), ...keys];
       } else {
         model.dsField = [];
       }
-
-      return v;
     },
   },
   {