Setting minDate and maxDate after date is selected clears selection

I have two date pickers that work together, the end date and the start date.

I want to set the minDate of the end date to the selection of the start date (because it cannot end before it starts) and vice versa.

This is how I am doing it:

```
onInputDateTo(date) {
...
const dateEndOfDay = new Date(date)
dateEndOfDay.setHours(23, 59, 59, 999)
this.maxDateFromAllowed = dateEndOfDay;
...
```

Notice how I use setHours to change to the end of the day to allow the selection of the same day.

No matter which day is selected, setting the `maxDateFromAllowed` will clear the selection of the start date.

No file or test is named in the issue. Start by reproducing the two-picker flow described, including setting maxDate or minDate after selecting a date and allowing the same day on both pickers. Done means updating either bound no longer clears the existing selection while the stated date constraints remain enforced.

索引モデルが issue の本文から書いたものです。