### 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
class EditorSpinSlider;
class PropertySelector;
class SceneTreeDialog;
class TextEdit;
class TextureButton;
class EditorPropertyNil : public EditorProperty {
	GDCLASS(EditorPropertyNil, EditorProperty);
	LineEdit *text = nullptr;
public:
	virtual void update_property() override;
	EditorPropertyNil();
};
class EditorPropertyText : public EditorProperty {
	GDCLASS(EditorPropertyText, EditorProperty);
	LineEdit *text = nullptr;
	bool updating = false;
	bool string_name = false;
	void _text_changed(const String &p_string);
	void _text_submitted(const String &p_string);
protected:
	virtual void _set_read_only(bool p_read_only) override;
	static void _bind_methods();
public:
	void set_string_name(bool p_enabled);
	virtual void update_property() override;
	void set_placeholder(const String &p_string);
	void set_secret(bool p_enabled);
	EditorPropertyText();
};
class EditorPropertyMultilineText : public EditorProperty {