Material-ui-pickers: Selecting a date should close the picker

[oliviertassinari]

Environment

| Tech | Version |
| -------------------- | ------- |
| @material-ui/pickers | v4.0.0-alpha.5 |

Steps to reproduce

1. Open https://next.material-ui-pickers.dev/demo/datepicker#basic-usage
2. Click on the first calendar icon
3. Select a date
4. The popup is still open

Expected behavior

The popup should close.

I think that we could consider a disableCloseOnSelect prop as the Autocomplete has for the current behavior.

[CarsonF]

FYI autoOk={true} does this

[oliviertassinari]

@CarsonF Thanks for raising this point up. It seems that we should handle desktop and mobile the opposite way, meaning autoOk={true} on a pointer device and autoOk={false} on a touch device. This would match the experience that is most commonly implemented. For instance, take Google Calendar, or Gmail as an example (compare the mobile app, with the web app).