### Bug Report
Picker TagHelpers do not set the "value" attribute in conjunction with the "for" attribute.
### Reproduction of the problem
1. Create a model with a nullable DateTime property:
public class MyModel
{
public DateTime? Birthday { get; set; }
}
2. Declare either a DatePickerFor, DateInputFor, or TimePickerFor TagHelpers and set an initial value:
@model OrderViewModel
<kendo-dateinput for="OrderDate" value="DateTime.Now">
...
</kendo-dateinput>
3. Notice, that the value has not been assigned accordingly.
This behavior is not consistent with the HTMLHelper, as the Value() attribute is taken more predominantly when the PickerFor HtmlHelper is utilized:
@(Html.Kendo().DatePickerFor(m => m.ShippedDate) .Value(DateTime.Today) )