`CDateRangePicker` shows the wrong date after selecting another month and then dismissing the popover

[sebcode]

How to repro:

• Open https://codesandbox.io/p/sandbox/6xthq7
• Select a date range, e.g. 2026-01-01 to 2026-02-28
• Now open the date range picker again and click on "January" above to open the month picker and select another month like "February" and then dismiss the picker with ESC or by clicking outside.
• Bug: The input box will still show 2/1/2026 although that doesn't match the current selection