Feature request: when using text-input, range and partial-range, allow typing a single date

[jono-hayward]

Is your feature request related to a problem? Please describe.
We use this date picker to select a range of dates for a document search. In this context, a single date is a valid 'range'. This is easy enough to choose when using the mouse, but when typing it involves typing out the date twice, e.g. 13/5/2025-13/5/2025 which can get pretty cumbersome.

Describe the solution you'd like
If a single date is entered using text input, accept that as valid input for the range and set the start and end date for the range to the same date.

Describe alternatives you've considered
Have looked at various workarounds using input events but it gets unwieldy pretty quickly.