WPF template project does not build with -mt

[JanProvaznik]

dotnet new wpf

(main branch bootstrap) dotnet build /mt

 D:\msbuilds\msb8\artifacts\bin\bootstrap\core\sdk\10.0.100\Sdks\Microsoft.NET.Sdk.WindowsDesktop\targets\Microsoft.WinFX.targets(440,8): error MSB5022: The MSBuild task host does not support running tasks that perform IBuildEngine callbacks. If you wish to perform these operations, please run your task in the core MSBuild process instead.  A task will automatically execute in the task host if the UsingTask has been attributed with a "Runtime" or "Architecture" value, or the task invocation has been attributed with an "MSBuildRuntime" or "MSBuildArchitecture" value, that does not match the current runtime or architecture of MSBuild.