### 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
LAYER_PHYSICS_2D,
		LAYER_RENDER_2D,
		LAYER_NAVIGATION_2D,
		LAYER_PHYSICS_3D,
		LAYER_RENDER_3D,
		LAYER_NAVIGATION_3D,
		LAYER_AVOIDANCE,
	};
private:
	EditorPropertyLayersGrid *grid = nullptr;
	void _grid_changed(uint32_t p_grid);
	String basename;
	LayerType layer_type;
	PopupMenu *layers = nullptr;
	TextureButton *button = nullptr;
	void _button_pressed();
	void _menu_pressed(int p_menu);
	void _refresh_names();
protected:
	void _notification(int p_what);
	virtual void _set_read_only(bool p_read_only) override;
	static void _bind_methods();
public:
	void setup(LayerType p_layer_type);
	void set_layer_name(int p_index, const String &p_name);
	String get_layer_name(int p_index) const;
	virtual void update_property() override;
	EditorPropertyLayers();
};
class EditorPropertyInteger : public EditorProperty {