cmd/swarm, p2p, swarm: Enable ENR in binary/execadapter (#19309)

* cmd/swarm, p2p, swarm: Enable ENR in binary/execadapter

* cmd/p2p/swarm: Remove comments + config.Enode nomarshal

* p2p/simulations: Remove superfluous error check

* p2p/simulation: Move init enode comment

* swarm/api: Check error in config test

* swarm, p2p/simulations, cmd/swarm: Use nodekey in binary record sign

* cmd/swarm: Make nodekey available for swarm api config

cmd/swarm/main.go

@@ -298,7 +298,10 @@ func bzzd(ctx *cli.Context) error {
 
 	//a few steps need to be done after the config phase is completed,
 	//due to overriding behavior
-	initSwarmNode(bzzconfig, stack, ctx)
+	err = initSwarmNode(bzzconfig, stack, ctx, &cfg)
+	if err != nil {
+		return err
+	}
 	//register BZZ as node.Service in the ethereum node
 	registerBzzService(bzzconfig, stack)
 	//start the node