Reverting package version

- The new version of this package appears to have a bug or no longer compatible with .NET Core 2.2

src/Web/Web.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.2.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.CodeAnalysis" Version="3.3.1" />
-    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.0.0" />
+    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.2.4" />
     <PackageReference Include="Microsoft.Web.LibraryManager.Build" Version="2.0.96" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="4.0.1" />
   </ItemGroup>