Date/time Input types should use Prefab date pickers

[jlowin]

When Input(input_type="date") or Input(input_type="time") is used, it renders the browser's native date/time picker, which looks out of place next to Prefab's styled Calendar and DatePicker components.

These input types should render Prefab's own date picker components instead of falling back to the browser defaults. This would give a consistent look and feel across all date selection UI, and let users benefit from the same theming, styling, and reactive state system.

Affected types: date, time, datetime-local.