about single parameter listener error, (.apply is not a function error)

Describe the bug
Socketio on function requests event name as 1st parameter and callback as 2nd parameter. For this, a check is done under the hood, but it is not enough. We need to improve the control a little more. Because if the callback is not sent, we get the following error.

To Reproduce

Please fill the following code example:

Socket.IO server version: 4.4.1

Server

// it doesn't matter what

Socket.IO client version: 4.4.1

Client

import { io } from "socket.io-client";

const socket = io("ws://localhost:3000/", {});

socket.on("connect", () => {
  console.log(`connect ${socket.id}`);

  socket.on("mybestevent.v1") // causes an error.
});

socket.on("disconnect", () => {
  console.log("disconnect");
});

Expected behavior
The code under the hood is as follows:

I think we can update the code here as follows. We even issue a warning like in the else block, telling the user that he should send a callback. I think it would be a better use.

Emitter.prototype.emit = function(event) {
   this._callbacks = this._callbacks || {};
   
   var args = new Array(arguments.length - 1), callbacks = this._callbacks['$' + event];
  
   for (var i = 1; i < arguments.length; i++) {
      args[i - 1] = arguments[i];
   }

   if(callbacks) {
     callbacks = callbacks.slice(0);
     for (var i = 0, len = callbacks.length; i < len; i++) {
         if(!!callbacks[i] && typeof callbacks[i] === 'function') {
              callbacks[i].apply(this, args);
         }else {
              console.warn("Looks like you forgot to add a callback to a listener. Please check your listeners.")
         }
     }
   }
}

Platform:

• Device: any
• OS: any

Additional context
I would be glad if you consider it.

Start from the Emitter.prototype.emit listener-dispatch code shown in the issue and reproduce the client example where socket.on receives only an event name. Trace why the missing callback reaches .apply; done means the invalid listener no longer throws and produces the proposed warning or an equivalent clear diagnostic.