### 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_LINEAR,
		TRANS_SINE,
		TRANS_QUINT,
		TRANS_QUART,
		TRANS_QUAD,
		TRANS_EXPO,
		TRANS_ELASTIC,
		TRANS_CUBIC,
		TRANS_CIRC,
		TRANS_BOUNCE,
		TRANS_BACK,
		TRANS_MAX
	};
	enum EaseType {
		EASE_IN,
		EASE_OUT,
		EASE_IN_OUT,
		EASE_OUT_IN,
		EASE_MAX
	};
private:
	TweenProcessMode process_mode = TweenProcessMode::TWEEN_PROCESS_IDLE;
	TweenPauseMode pause_mode = TweenPauseMode::TWEEN_PAUSE_BOUND;
	TransitionType default_transition = TransitionType::TRANS_LINEAR;
	EaseType default_ease = EaseType::EASE_IN_OUT;
	ObjectID bound_node;
	Vector<List<Ref<Tweener>>> tweeners;
	double total_time = 0;
	int current_step = -1;