SDK content differences - MsBuild

[ellahathaway]

Related to #4342

Microsoft and source-built SDKs contain the following differences related to msbuild content and packages. There should be no unintentional differences.

Files only present in Microsoft SDK:

./sdk/x.y.z/cs/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/de/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/es/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/fr/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/it/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/ja/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/ko/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/pl/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/pt-BR/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/ru/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/tr/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/zh-Hans/Microsoft.Build.NuGetSdkResolver.resources.dll
./sdk/x.y.z/zh-Hant/Microsoft.Build.NuGetSdkResolver.resources.dll

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