子表 导出逻辑修改

src/business/platform/form/formrender/dynamic-form/dynamic-form-table.vue

@@ -682,7 +682,7 @@ export default {
         handleExport (button, index) {
             const position = button.position
             const selection = this.getSelection(position, index)
-            if (selection.length > 1) {
+            if (selection.length > 0) {
                 ActionUtils.selectedMultiRecord(selection)
                     .then((ids) => {
                         this.exportData(ids)