rpc:cast/4 from Erlang/OTP24 to Ergo does not work

[leonlee2013]

Erlang project has rpc:cast/4 which needs to be compatible with ergo.
Here is the test code：

package main

import (
	"flag"
	"fmt"

	"github.com/ergo-services/ergo"
	"github.com/ergo-services/ergo/etf"
	"github.com/ergo-services/ergo/node"
)

var (
	ServerName string
	NodeName   string
	Cookie     string
)

func init() {
	flag.StringVar(&ServerName, "server", "example", "server process name")
	flag.StringVar(&NodeName, "name", "go_node1@127.0.0.1", "node name")
	flag.StringVar(&Cookie, "cookie", "go_erlang_cookie", "cookie for interaction with erlang cluster")
}

func main() {
	flag.Parse()

	fmt.Println("")
	fmt.Println("to stop press Ctrl-C")
	fmt.Println("")

	node, err := ergo.StartNode(NodeName, Cookie, node.Options{})
	if err != nil {
		panic(err)
	}

	testFun1 := func(a ...etf.Term) etf.Term {
		fmt.Printf("go handle --->>> %#v\n", a)
		return a[len(a)-1]
	}
	if e := node.ProvideRPC("testMod", "testFun", testFun1); e != nil {
		panic(err)
	}

	fmt.Println("Start erlang node with the command below:")
	fmt.Printf("    $ erl -name %s -setcookie %s\n\n", "erl-"+node.Name(), Cookie)

	node.Wait()
}

Before fixing the bug of rpc:call/4

#Erlang input and output:
(erl-go_node1@127.0.0.1)51> rpc:cast('go_node1@127.0.0.1', testMod, testFun, [a,"hello",111]).
true

#Log output of Go
2022/12/07 21:23:02 WARNING! Server [rex] HandleCast: unhandled message etf.Tuple{"cast", "testMod", "testFun", etf.List{"a", "hello", 111}, etf.Pid{Node:"erl-go_node1@127.0.0.1", ID:0x48, Creation:0x638455dd}}

After fixing the bug of rpc:call/4

#Erlang input and output:
(erl-go_node1@127.0.0.1)51> rpc:cast('go_node1@127.0.0.1', testMod, testFun, [a,"hello",111]).
true

#Log output of Go
go handle --->>> []etf.Term{"a", "hello", 111}