[bug fix] Form: layout属性改为可选 (#1331)
[bug fix] Form: layout属性改为可选 (#1331)

* fix: IFormSelectFieldProps['name'] should be inferred correctly

* chore: sync to master

* fix: Form组件的layout属性改为可选属性

youzan/zent,youzan/zent,youzan/zent,youzan/zent