SDK style projects with WPF do not import nuget props and targets

[jviau]

WPF xaml compilation uses a temporary project with a different name. This breaks importing of props from https://github.com/Microsoft/msbuild/blob/8e015cc049b5f3f9cbd9e10ee30ae86998d934d5/src/Tasks/Microsoft.Common.props#L66 (and the equivalent targets). The end result is WPF compilation fails due to the temporary project not having nuget restore information.

[jviau]

Same issue: NuGet/Home#5894

[rainersigwald]

Fixed as dotnet/wpf#810.