Describe the bug
When the DatePicker component is configured to use custom DateInput, its popup is not closing when the user clicks outside the component.

• Possible workaround: https://stackblitz.com/edit/qqbmjn-ehucnd?file=src%2Fmain.vue

To Reproduce

1. Open this StackBlitz example
2. Click on the DatePicker to open its popup
3. Click outside the DatePicker component

Expected behavior
The DatePicker's popup should close when the user clicks outside the component