Improve `NU1202` error message for multi-targeted projects like .NET MAUI

[jonathanpeppers]

NuGet Product(s) Involved

dotnet.exe

The Elevator Pitch

If I have a dotnet new maui project like:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFrameworks>net10.0-android;net10.0-ios;net10.0-maccatalyst</TargetFrameworks>

And I install an Android-only <PackageReference>:

<ItemGroup>
  <PackageReference Include="Xamarin.AndroidX.Core" Version="1.17.0" />
</ItemGroup>

I get a long list of errors like:

> dotnet build
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-ios26.0 (.NETCoreApp,Version=v10.0). Package Xamarin.AndroidX.Core 1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202: 
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-maccatalyst26.0 (.NETCoreApp,Version=v10.0). Package Xamarin.AndroidX.Core 1.17.0 supports
      :
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202: 
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-windows10.0.19041 (.NETCoreApp,Version=v10.0). Package Xamarin.AndroidX.Core 1.17.0 suppor
      ts:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202: 
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-ios26.0 (.NETCoreApp,Version=v10.0) / android-arm64. Package Xamarin.AndroidX.Core 1.17.0 
      supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-ios26.0 (.NETCoreApp,Version=v10.0) / android-x64. Package Xamarin.AndroidX.Core 1.17.0 su
      pports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-ios26.0 (.NETCoreApp,Version=v10.0) / iossimulator-x64. Package Xamarin.AndroidX.Core 1.17
      .0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-ios26.0 (.NETCoreApp,Version=v10.0) / maccatalyst-x64. Package Xamarin.AndroidX.Core 1.17.
      0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-ios26.0 (.NETCoreApp,Version=v10.0) / win-x64. Package Xamarin.AndroidX.Core 1.17.0 suppor
      ts:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-maccatalyst26.0 (.NETCoreApp,Version=v10.0) / android-arm64. Package Xamarin.AndroidX.Core
       1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-maccatalyst26.0 (.NETCoreApp,Version=v10.0) / android-x64. Package Xamarin.AndroidX.Core 1
      .17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-maccatalyst26.0 (.NETCoreApp,Version=v10.0) / iossimulator-x64. Package Xamarin.AndroidX.C
      ore 1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-maccatalyst26.0 (.NETCoreApp,Version=v10.0) / maccatalyst-x64. Package Xamarin.AndroidX.Co
      re 1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-maccatalyst26.0 (.NETCoreApp,Version=v10.0) / win-x64. Package Xamarin.AndroidX.Core 1.17.
      0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-windows10.0.19041 (.NETCoreApp,Version=v10.0) / android-arm64. Package Xamarin.AndroidX.Co
      re 1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-windows10.0.19041 (.NETCoreApp,Version=v10.0) / android-x64. Package Xamarin.AndroidX.Core
       1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-windows10.0.19041 (.NETCoreApp,Version=v10.0) / iossimulator-x64. Package Xamarin.AndroidX
      .Core 1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-windows10.0.19041 (.NETCoreApp,Version=v10.0) / maccatalyst-x64. Package Xamarin.AndroidX.
      Core 1.17.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
    D:\src\hellomaui\hellomaui.csproj : error NU1202:
      Package Xamarin.AndroidX.Core 1.17.0 is not compatible with net10.0-windows10.0.19041 (.NETCoreApp,Version=v10.0) / win-x64. Package Xamarin.AndroidX.Core 1.1
      7.0 supports:
        - net10.0-android36.0 (.NETCoreApp,Version=v10.0)
        - net8.0-android34.0 (.NETCoreApp,Version=v8.0)
                                                                                                                                                                    
Restore failed with 18 error(s) in 1.0s

Ideally, we'd improve (shorten!) the error message a bit here.

Additional Context and Details

Here is a .binlog: msbuild.zip