FormBuilderDateRangePicker: make full calendar display use up less of the screen

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Package/Plugin version

9.1.1

### What you'd like to happen

```Markdown
Specifically on the Web, opening the calendar widget for FormBuilderDateRangePicker results in the entire screen being taken up by the vertical calendar range selection display. It would be nice if this could use up a similar amount of screen real estate as it does on mobile, or to be closely aligned with the way it appears on the web for the FormBuilderDateTimePicker.
```

### Alternatives you've considered

_No response_

### Aditional information

On Flutter for the Web, FomrBuilderDateTimePicker looks quite nice (see the following screen snippet):

It would be nice for FormBuilderDateRangePicker to also confine itself and maintain a similar aesthetic to this. In 9.1.1, FormBuilderDateRangePicker it uses the entire available screen width and height.