Update the Clever provider to not require a backchannel identity token

src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationHandlers.cs

@@ -641,6 +641,10 @@ public static partial class OpenIddictClientWebIntegrationHandlers
              context.RequireBackchannelIdentityToken,
              context.ValidateBackchannelIdentityToken) = context.Registration.ProviderType switch
             {
+                // Clever claims the OpenID Connect flavor of the code flow is supported but
+                // their implementation doesn't always return an id_token from the token endpoint.
+                ProviderTypes.Clever => (true, false, true),
+
                 // While PayPal claims the OpenID Connect flavor of the code flow is supported,
                 // their implementation doesn't return an id_token from the token endpoint.
                 ProviderTypes.PayPal => (false, false, false),