Add System.Formats.Nrbf to the windowsdesktop transport package (#103629)

Unblocks the windowsdesktop dependency flow. See dotnet/windowsdesktop#4459 (comment)

Author: ViktorHofer

src/libraries/NetCoreAppLibrary.props

@@ -232,6 +232,7 @@
       System.Diagnostics.EventLog;
       System.Diagnostics.PerformanceCounter;
       System.DirectoryServices;
+      System.Formats.Nrbf;
       System.IO.Packaging;
       System.Resources.Extensions;
       System.Security.Cryptography.Pkcs;