fix: use UserInfo endpoint with OIDC (#5735)

This resolves a user issue surfaced in Discord:
https://discord.com/channels/747933592273027093/1064566338875576361/1064566338875576361

Both methods of obtaining claims need to be used according
to the OIDC specification.

cli/server.go

@@ -543,6 +543,7 @@ func Server(vip *viper.Viper, newAPI func(context.Context, *coderd.Options) (*co
 						Endpoint:     oidcProvider.Endpoint(),
 						Scopes:       cfg.OIDC.Scopes.Value,
 					},
+					Provider: oidcProvider,
 					Verifier: oidcProvider.Verifier(&oidc.Config{
 						ClientID: cfg.OIDC.ClientID.Value,
 					}),