Utility properties such as Display and Margin were applied to the inner
file <input> instead of the wrapper element, so e.g. Display.None did not
hide the control. FileInput now defaults UtilityTarget to Wrapper (via a
new DefaultUtilityTarget override) for the providers that render a wrapper
(AntDesign, Bootstrap, Bootstrap5, Bulma, FluentUI2), and each wrapper now
renders the wrapper utility classes and styles. AntDesign also gains an
ant-upload-wrapper root element so Display.None hides the whole control,
not just the upload button. The core bare-input providers (Material,
Tailwind) keep targeting the input itself.

Closes Megabit#6522