fix: Space key scrolling page on submit

Author: Jasenkoo

src/Vue3DatePicker/components/DatepickerMenu.vue

@@ -387,6 +387,7 @@
 
     const handleSpace = (event: Event): void => {
         event.stopImmediatePropagation();
+        event.preventDefault();
         if (props.spaceConfirm) {
             emit('selectDate');
         }