WebClient timeout is not set correctly

[StefanOssendorf]

Dear @StefanOssendorf now DefaultWebClient uses req.Timeout = timeout.Milliseconds; that will trigger the exception that timeout must be greater than 0 or infinite,.
I don't think the current implementation works as expected, for me to work with sync call I needed to create a new WebClient and use TotalMiliseconds.

Originally posted by @ctescu in #4431 (comment)

We are using timeout.Milliseconds here

csla/Source/Csla/DataPortalClient/HttpProxy.cs

Lines 258 to 277 in 60bd0b3

	private class DefaultWebClient(TimeSpan timeout, TimeSpan readWriteTimeout) : WebClient
	{
	protected override WebRequest GetWebRequest(Uri address)
	{
	var req = base.GetWebRequest(address)!;
	if (req is HttpWebRequest httpWebRequest)
	{
	if (readWriteTimeout > TimeSpan.Zero)
	{
	httpWebRequest.ReadWriteTimeout = readWriteTimeout.Milliseconds;
	}
	}
	if (timeout > TimeSpan.Zero)
	{
	req.Timeout = timeout.Milliseconds;
	}
	return req;
	}
	}

instead of timeout.TotalMilliseconds.