fix open generics resolution

Author: DominicUllmann

src/Ninject.Web.AspNetCore/Components/ConstrainedGenericBindingResolver.cs

@@ -30,7 +30,7 @@ public IEnumerable<IBinding> Resolve(Multimap<Type, IBinding> bindings, Type ser
 				// If the binding has a ServiceDescriptor in its metadata, then we 
 				if (binding.Target == BindingTarget.Type && binding.Metadata.Has(nameof(ServiceDescriptor)))
 				{
-					return SatisfiesGenericTypeConstraints(service, binding.Metadata.Get<ServiceDescriptor>(nameof(ServiceDescriptor)).ImplementationType);
+					return SatisfiesGenericTypeConstraints(service, binding.Metadata.Get<IDescriptorAdapter>(nameof(ServiceDescriptor)).ImplementationType);
 				}
 
 				// ... otherwise we default to the OpenGenericBindingResolver which returns _all_ the bindings without regard for their generic constraints

src/Ninject.Web.AspNetCore/NinjectServiceProviderBuilder.cs

@@ -28,7 +28,7 @@ public IServiceProvider Build()
 				var scopeProvider = context.GetServiceProviderScopeParameter()?.SourceServiceProvider;
 				if (scopeProvider != null)
 				{
-					var descriptor = context.Request.ParentContext?.Binding.Metadata.Get<ServiceDescriptor>(nameof(ServiceDescriptor));
+					var descriptor = context.Request.ParentContext?.Binding.Metadata.Get<IDescriptorAdapter>(nameof(ServiceDescriptor));
 					if (descriptor == null || descriptor.Lifetime != ServiceLifetime.Singleton)
 					{
 						return scopeProvider;

src/Ninject.Web.AspNetCore/ServiceCollectionAdapter.cs

@@ -72,7 +72,7 @@ private IBindingWithOrOnSyntax<T> ConfigureImplementationAndLifecycle<T>(
 #endif
 
 			var resultWithMetadata = ConfigureImplementationAndLifecycleWithAdapter(bindingToSyntax, adapter)
-				.WithMetadata(nameof(ServiceDescriptor), descriptor);
+				.WithMetadata(nameof(ServiceDescriptor), adapter);
 
 			object indexKey = BindingIndex.DefaultIndexKey;
 #if NET8_0_OR_GREATER