Unable to set IdleSettings.WaitTimeout to "Do not wait"

[dahall]

Discussed in #903

^{Originally posted by s-lazukov September 30, 2021}
In the Task Scheduler I can set the "Wait for idle for:" parameter to "Do not wait". How can I set this value in code?
If I set IdleSettings.WaitTimeout to TimeSpan.Zero, then the value is not written to the task parameters and the TaskScheduler uses the default value (1 hour)