### Godot version

9f12e7b52d944

### System information

arch linux

### Issue description

Attempting to edit from the editor a typed array exported from a tool script fails, any value is immediately reset, setters are never called.

### Steps to reproduce

Create a script such as follows and try to add and then change items of the array in the inspector.


```gdscript
@tool
extends Node

@export var x: Array[String]
```

### Minimal reproduction project

n/a
EASING_ZERO,
		EASING_LINEAR,
		EASING_IN,
		EASING_OUT,
		EASING_IN_OUT,
		EASING_OUT_IN,
		EASING_MAX
	};
	void _drag_easing(const Ref<InputEvent> &p_ev);
	void _draw_easing();
	void _set_preset(int);
	void _setup_spin();
	void _spin_value_changed(double p_value);
	void _spin_focus_exited();
	void _notification(int p_what);
protected:
	virtual void _set_read_only(bool p_read_only) override;
	static void _bind_methods();
public:
	virtual void update_property() override;
	void setup(bool p_positive_only, bool p_flip);
	EditorPropertyEasing();
};
class EditorPropertyRect2 : public EditorProperty {