[main] New sdk binary in VMR

[Winniexu01]

The sdk test binary already exists in the VMR, it just moved to new place dotnet/sdk#48280:

 src/sdk/test/dotnet.Tests/ShellShimTests/WpfBinaryTestAssets/testwpf.dll

https://dev.azure.com/dnceng/internal/_build/results?buildId=2684610&view=logs&j=fa5c2909-0e29-5671-d5eb-16d6c40e0c4a&t=2a0bd486-3f67-5c59-da0c-b84d88848a4b&l=29 (internal Microsoft link)