Date picker with no value

[wnvko]

Description

I am trying to clear the value of the date-picker or to set it to nullable data.

Steps to reproduce

Use code like this:

@state()
private undefinedDate?: Date;

...

<igc-date-picker .value=${this.undefinedDate}
        selectedValueChanged=${(_s: IgcDatePickerComponent, e: IgcSelectedValueChangedEventArgs) => this.undefinedDate = e.newValue}>
</igc-date-picker>

or like this:

@state()
private definedDate?: Date = new Date();
...
<igc-date-picker .value=${this.definedDate}
        selectedValueChanged=${(_s: IgcDatePickerComponent, e: IgcSelectedValueChangedEventArgs) => this.definedDate = e.newValue}>
</igc-date-picker>

Result

In first case application throws an error - Cannot read properties of undefined (reading 'getHours'). In second case if I click on clear value button the value of the date picker becomes 01.01.0001 instead of undefined or null.

Expected result

Data picker should be able to accept nullable values as its value.