UWP-WinUI migration issue

[dotMorten]

Describe the bug

Trying to create mappings for a UWP to WinUI package mapping, and having no luck and it ignores the package upgrade.
Branch with changes here:
https://github.com/dotMorten/upgrade-assistant/tree/arcgis_uwp/src/UpgradeAssistant.Mappings/mappings/Esri/Esri.ArcGISRuntime.UWP

To Reproduce

With the above branch for mappings, try and upgrade the following project:
ArcGISApp1.zip
You'll see the following error issue reported:

This is even though the mapping has been explicitly defined here: https://github.com/dotMorten/upgrade-assistant/blob/arcgis_uwp/src/UpgradeAssistant.Mappings/mappings/Esri/Esri.ArcGISRuntime.UWP/esri.arcgisruntime.uwp.packagemap.json#L4

Further technical details

• Windows version: Win11, 22H2 x64
• Include the output of dotnet --list-sdks: 3.1.426, 8.0.300
• Include the output of upgrade-assistant --version 0.5.678.21462

A similar issue also occurs with a Xamarin.Forms project, despite the mapping being defined for forms too:

upgrade-assistant/src/UpgradeAssistant.Mappings/mappings/Esri/Esri.ArcGISRuntime.Xamarin.Forms/esri.arcgisruntime.xamarin.forms.packagemap.json

Line 96 in 14aba66

"name": "Esri.ArcGISRuntime.UWP",

[mgoertz-msft]

The problem is that the report uses "net8.0" for its assessment when the project will be upgraded to "net8.0-windows10.0.19041.0". I opened a bug internally.