fix: modal open logic missing (#3462)

* fix: keep rowSelection onChange call outside

* fix: watch open logic lost after build (modal)

src/components/Modal/src/BasicModal.vue

@@ -169,7 +169,9 @@
     (v) => {
       emit('open-change', v);
       emit('update:open', v);
-      instance && modalMethods.emitOpen?.(v, instance.uid);
+      if (instance && modalMethods.emitOpen) {
+        modalMethods.emitOpen(v, instance.uid);
+      }
       nextTick(() => {
         if (props.scrollTop && v && unref(modalWrapperRef)) {
           (unref(modalWrapperRef) as any).scrollTop();