Build failure when referencing WinUI and AI packages

[dotMorten]

Describe the bug

Referencing the WinUI and AI packages only, causes a build error;

Found multiple publish output files with the same relative path: 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Graphics.Imaging.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Graphics.Imaging.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.AI.ContentSafety.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.AI.ContentSafety.winmd,
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.AI.Foundation.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.AI.Foundation.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.AI.Imaging.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.AI.Imaging.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.AI.Text.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.AI.Text.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.AI.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.AI.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.SemanticSearch.winmd,
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.SemanticSearch.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.Vision.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.Vision.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\metadata\Microsoft.Windows.Workloads.winmd, 
E:\.nuget\packages\microsoft.windowsappsdk.ai\1.8.135-experimental\runtimes-framework\win-arm64\native\Microsoft.Windows.Workloads.winmd.

Steps to reproduce the bug

1. Create a blank WinUI Package app
2. Rreplace the WinAppSDK metapackage with these two packages:

    <PackageReference Include="Microsoft.WindowsAppSDK.WinUI" Version="1.8.250507002-experimental" />
    <PackageReference Include="Microsoft.WindowsAppSDK.AI" Version="1.8.135-experimental" />

3. Compile and observe the build error

Expected behavior

No build error.

Screenshots

No response

NuGet package version

Windows App SDK 1.8 Experimental 2: 1.8.250515001-experimental2

Packaging type

Packaged (MSIX)

Windows version

Windows 11 version 24H2 (22621, October 2024 Update)

IDE

Visual Studio 2022

Additional context

If you also add the <PackageReference Include="Microsoft.WindowsAppSDK.Packages" Version="1.8.250515001-experimental2" /> package, the issue resolves itself.