Adopt chromium methodology for determining tablet on Windows

[daltzctr]

Description of Change

Uses a more conservative approach of determining tablet mode on Windows. This approach is functionally identical to Chromium's implementation for determining tablet on Windows. Additionally, it adds a few documentation comments on the observed behavior.

I don't have a good idea on how to add a unit test for this, and it's a bit of an implicit breaking change (some users who had tablet layouts may have desktop layouts now), but I think that number of users affected will be near, or at 0.

Issues Fixed

Possibly fixes #22093

[dotnet-policy-service]

Hey there @daltzctr! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[daltzctr]

@dotnet-policy-service agree [company="CTR Electronics"]

[daltzctr]

@dotnet-policy-service agree company="CTR Electronics"

[daltzctr]

Marking as draft until I confirm a device that is Windows that should be tablet is still tablet (I will test on my Surface Pro 7). Reviews are still welcome.

[daltzctr]

Surface Pro 7 (Windows 11): Keyboard Attached

Surface Pro 7 (Windows 11): Keyboard Not-attached

Also tested on XPS 15 which now correctly reports as not-tablet,
Also tested on MSI GF65 which also reports as not-tablet (this always reported as not-tablet, but more devices are better)

[daltzctr]

This is ready for review and/or merge.

[jonathanpeppers]

Can you share what device was wrong before (using stable MAUI)? Was it a Windows laptop that just always returned Tablet no matter what?

[daltzctr]

XPS 15 reports as tablet.

[daltzctr]

Can this get merged?

[daltzctr]

@Foda is this blocked on something?

[daltzctr]

@Foda just a courtesy ping

[jfversluis]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[jfversluis]

Congratulations on being a .NET MAUI contributor!