单据编号修改校验逻辑添加规则：新增单据视为modified

frontend/saas-web/app/view/core/form/FormPanelController.js

@@ -167,7 +167,7 @@ Ext.define('saas.view.core.form.FormPanelController', {
         codeField = form.getForm().findField(form._codeField),
         detailCount = form.detailCount,
         viewModel = me.getViewModel(),
-        codeModified = codeField && codeField.isDirty();
+        codeModified = !form.initId || (codeField && codeField.isDirty());
 
         //form里面数据
         var formData = form.getSaveData();