[Package Issue]: Updates for GitHub.GitHubDesktop don't distinguish between the stable and beta channels

Please confirm these before moving forward

• I have searched for my issue and not found a work-in-progress/duplicate/resolved issue.
• I have not been informed if the issue is resolved in a preview version of the winget client.

Category of the issue

Side-By-Side installation.

Brief description of your issue

GitHub Desktop offers two update channels (stable and beta) - however, winget considers these as one channel. Therefore, beta users are offered updates that would move them to the stable channel. (GitHub Desktop's manifest is also a few versions behind, but I assume this will be resolved at some point.)

(Apologies if this is the wrong issue template - this seemed to me to be the best fit.)

Steps to reproduce

• Install the beta version of GitHub Desktop here
• Wait for a newer stable version to release
• Run winget upgrade

Actual behavior

Stable versions are listed as upgrades, despite the fact that they would move the user out of the beta channel.

Expected behavior

A new version should only be shown if it's a newer beta version, ensuring that users stay in the beta channel. This would be consistent with apps like Discord.

Environment

Windows Package Manager (Preview) v1.4.2161-preview
Copyright (c) Microsoft Corporation. All rights reserved.

Windows: Windows.Desktop v10.0.25201.1000
System Architecture: X64
Package: Microsoft.DesktopAppInstaller v1.19.2161.0

Screenshots and Logs

No response

Start by reproducing the behavior with the GitHub Desktop beta from desktop.github.com/beta/ and winget upgrade, then inspect how the GitHub Desktop package manifest represents update channels. Done means a beta installation is offered only newer beta versions, not stable releases that would move it to the stable channel.