win-arm64\native\sni.dll not trimmed during publish

# Repro Steps
1. `dotnet new web`
2. `dotnet publish`

# Expected
publish dir contains only app binaries/config

# Actual
```
runtimes\win-arm64\native\sni.dll
```

# Dependency Versions
* CLI: https://dotnetcli.azureedge.net/dotnet/Sdk/2.0.0-preview2-006494/dotnet-sdk-2.0.0-preview2-006494-win-x64.zip
