NAN_GETTER and NAN_SETTER not called in Node 23+

Hello!

I have a NAN_SETTER declared like:

.h

  static NAN_SETTER(SessionConnectedSetter);

.cpp

NAN_SETTER(MyClass::SessionConnectedSetter) {
  printf("MyClass::SessionConnectedSetter 0\n");
  MyClass *obj = ObjectWrap::Unwrap<MyClass>(info.This());
  printf("OTKSession::SessionConnectedSetter 1\n");
  Local<Function> cb = value.As<Function>();
  printf("OTKSession::SessionConnectedSetter 2\n");
  obj->session_connected_callback_ = new Nan::Callback(cb);
  printf("OTKSession::SessionConnectedSetter 3\n");
}

// Inside the Init function:
...
  Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(MyClass::New);
  ctor->SetClassName(Nan::New("MyClass").ToLocalChecked());
  ctor->InstanceTemplate()->SetInternalFieldCount(1);
  constructor.Reset(ctor);
  printf("MyClass::Init 2\n");
  // Methods
  Local<ObjectTemplate> proto = ctor->PrototypeTemplate();

  Nan::SetAccessor(proto, Nan::New("onConnected").ToLocalChecked(), nullptr, SessionConnectedSetter);

...

And, I call the setter from Javascript:

const myObject = new MyClass();
myObject.onConnected = () => {
  console.log('onConnected Called!');
}

Expected
When the onConnected setter is set, I would expect the following output:

MyClass::SessionConnectedSetter 0
MyClass::SessionConnectedSetter 1
MyClass::SessionConnectedSetter 2
MyClass::SessionConnectedSetter 3

Actual
The Setter is never called and there are no logs in the output.
The same behaviour is seen with NAN_GETTER.

This works for node versions <= 22.

Can anyone please shed a bit of light here?
Thank you very much in advance!

The reproduction is in the issue body, centered on NAN_SETTER, NAN_GETTER, MyClass::Init, and the onConnected assignment. First compare the example on Node versions through 22 and Node 23+, then inspect why Nan::SetAccessor no longer invokes either callback. Done means both callbacks work with the shown example on Node 23+.