ui: only include Avn.Diagnostics in debug

Author: mjcheetham

src/shared/Core/Core.csproj

@@ -23,6 +23,9 @@
     <PackageReference Include="System.CommandLine" Version="2.0.0-beta1.21216.1" />
     <PackageReference Include="Avalonia" Version="0.10.18" />
     <PackageReference Include="Avalonia.Desktop" Version="0.10.18" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(Configuration)' == 'Debug'">
     <PackageReference Include="Avalonia.Diagnostics" Version="0.10.18" />
   </ItemGroup>