cmd, node, p2p/simulations: fix node account manager leak (#19004)

* node: close AccountsManager in new Close method

* p2p/simulations, p2p/simulations/adapters: handle node close on shutdown

* node: move node ephemeralKeystore cleanup to stop method

* node: call Stop in Node.Close method

* cmd/geth: close node.Node created with makeFullNode in cli commands

* node: close Node instances in tests

* cmd/geth, node: minor code style fixes

* cmd, console, miner, mobile: proper node Close() termination

cmd/geth/main.go

@@ -279,6 +279,7 @@ func geth(ctx *cli.Context) error {
 		return fmt.Errorf("invalid command: %q", args[0])
 	}
 	node := makeFullNode(ctx)
+	defer node.Close()
 	startNode(ctx, node)
 	node.Wait()
 	return nil