Allow SelectWithInput to be marked as required and handle that dynamically

Allow SelectWithInput to be marked as required and handle that dynamically

Alters the SelectWithInput to allow a required config to be passed from a
parent widget. Also handles the required state dynamically. If the widget is
an OR widget, then only the select dropdown is required. The text input will
be required when the other option is selected. If the widget is an AND widget
then both the select dropdown and the text input will be required.

Bug: T220533
Change-Id: I8479743126756f2b1bd7bcd53b100a0134f34d07