jetbrains.rider: Use unwrapped location of sdk

Rider needs the location of the actual sdk to function. This commit uses the unwrapped sdk location instead of the wrapper which causes errors on startup of Rider. The issue makes it impossible to use Rider in practice.

pkgs/applications/editors/jetbrains/default.nix

@@ -230,7 +230,7 @@ rec {
 
           for dir in lib/ReSharperHost/linux-*; do
             rm -rf $dir/dotnet
-            ln -s ${dotnet-sdk_7} $dir/dotnet
+            ln -s ${dotnet-sdk_7.unwrapped}/share/dotnet $dir/dotnet
           done
         )
       '';