Revert "TUN-7065: Revert Ingress Rule check for named tunnel configurations"

This reverts commit b8e610a067.

cmd/cloudflared/tunnel/configuration.go

@@ -258,6 +258,9 @@ func prepareTunnelConfig(
 			return nil, nil, err
 		}
 	}
+	if ingressRules.IsEmpty() {
+		return nil, nil, ingress.ErrNoIngressRules
+	}
 
 	protocolSelector, err := connection.NewProtocolSelector(transportProtocol, cfg.WarpRouting.Enabled, namedTunnel, protocolFetcher, supervisor.ResolveTTL, log, c.Bool("post-quantum"))
 	if err != nil {