WTSApi32: Wrong variable used to create dateTime

[AgentDove]

Describe the bug and how to reproduce

public DateTime LastInputTime => DateTime.FromFileTimeUtc(LogonTimeUTC);
Should be
public DateTime LastInputTime => DateTime.FromFileTimeUtc(LastInputTimeUTC);

What code is involved

Vanara/PInvoke/WTSApi32/WTSApi32.cs

Line 3020 in 7de0f53

public DateTime LastInputTime => DateTime.FromFileTimeUtc(LogonTimeUTC);

Expected behavior

LastInputTime should be derived form LastInputTimeUTC and not LogonTimeUTC

[dahall]

Fixed in nullable branch. Will release in 4.0 package push shortly.