fix(modal): add onUpdate:open prop

Author: kovsu

Diff for: components/modal/Modal.tsx

@@ -51,7 +51,8 @@ export const modalProps = () => ({
   onOk: Function as PropType<(e: MouseEvent) => void>,
   onCancel: Function as PropType<(e: MouseEvent) => void>,
   'onUpdate:visible': Function as PropType<(visible: boolean) => void>,
-  onChange: Function as PropType<(visible: boolean) => void>,
+  'onUpdate:open': Function as PropType<(open: boolean) => void>,
+  onChange: Function as PropType<(open: boolean) => void>,
   afterClose: Function as PropType<() => void>,
   centered: { type: Boolean, default: undefined },
   width: [String, Number],
@@ -179,6 +180,7 @@ export default defineComponent({
     };
 
     const handleOk = (e: MouseEvent) => {
+      emit('update:open', true);
       emit('ok', e);
     };