Handle the case where there is no resume time.

[andriyDev]

Objective

• Fix the case where the UpdateMode::reactive is set to Duration::MAX.

Solution

• When StartCause::WaitCancelled::requested_resume is None, always report this case as not having elapsed the wait time.

Testing

• Ran the desktop_request_redraw with UpdateMode::reactive(Duration::MAX) and now it updates only when a redraw happens or a window even happens!