### Godot version

v3.5.1.stable.official [6fed1ffa3]

### System information

Steam OS, Steam Deck

### Issue description

Calling `tween_callback` where the first (object) parameter is a `Reference` doesn't work as I expected.  The code compiles and runs without producing any errors, but the callback function is never executed.

### Steps to reproduce

Running the minimal reproduction project demonstrates the issue.  The code pattern is quite simple:

**ReferenceType.gd**
```gdscript
extends Reference

func foo():
	print("foo was called")
```

**Test.gd**
```gdscript
extends Node2D

func _ready():
	var ref := preload("ReferenceType.gd").new()
	var tween := create_tween()
	tween.tween_interval(1)
	tween.tween_callback(ref, "foo")
```

I suspect that the issue is somehow related to reference-counting, and that `SceneTreeTween` is not updating the object's reference count.  I can get the behavior I expect by modifying the code to call `reference()` and `unreference()` manually, as shown below:

```gdscript
	var ref := preload("ReferenceType.gd").new()
	ref.reference()
	
	var tween := create_tween()
	tween.tween_interval(1)
	tween.tween_callback(ref, "foo")
	tween.tween_callback(ref, "unreference")
```

The documentation strongly recommends against calling these functions "unless you know what you're doing", so it feels like `SceneTreeTween` should handle this.  If this is expected behavior, it would be nice if the `SceneTreeTween` documentation urged caution when using `Reference`. 

### Minimal reproduction project

[ReferenceTween.zip](https://github.com/godotengine/godot/files/10328012/ReferenceTween.zip)

trans_type = p_trans;
	return this;
}
Ref<PropertyTweener> PropertyTweener::set_ease(Tween::EaseType p_ease) {
	ease_type = p_ease;
	return this;
}
Ref<PropertyTweener> PropertyTweener::set_delay(double p_delay) {
	delay = p_delay;
	return this;
}
void PropertyTweener::start() {
	elapsed_time = 0;
	finished = false;
	Object *target_instance = ObjectDB::get_instance(target);
	if (!target_instance) {
		WARN_PRINT("Target object freed before starting, aborting Tweener.");
		return;
	}
	if (do_continue) {
		initial_val = target_instance->get_indexed(property);
	}
	if (relative) {
		final_val = Animation::add_variant(initial_val, base_final_val);
	}
	delta_val = Animation::subtract_variant(final_val, initial_val);
}
bool PropertyTweener::step(double &r_delta) {