CurrentPosition() throws NRE in WinUI

[ADD-David-Antolin]

Current behavior

CurrentPosition() throws NullReferenceException in WinUI

Expected behavior

CurrentPosition() throws NullReferenceException in WinUI

How to reproduce it (as minimally and precisely as possible)

Use any helper method of InputInjectionHelper that requires CurrentPosition().

Anything else we need to know?

The implementation worked on UWP but it does not work on WinUI 3

[agneszitte]

@ADD-David-Antolin
The adjustments that I made with #208 for this issue are available with latest uno.ui.runtimetests.engine version 2.0.0-dev.60.

[ADD-David-Antolin]

@agneszitte tried with 2.0.0-dev.60 and now I get a System.ArgumentException: 'value does not fall within the expected range.' in the method InjectMouseInput of InputInjectorHelper.
I tested it cloning the repository and executing the test app.
It also happens that when it does the injection the computer goes to lock screen (as if win + L was typed).
Please, reopen the issue.