### 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
#include "editor_properties_array_dict.h"
#include "core/input/input.h"
#include "core/io/marshalls.h"
#include "editor/editor_properties.h"
#include "editor/editor_properties_vector.h"
#include "editor/editor_scale.h"
#include "editor/editor_settings.h"
#include "editor/gui/editor_spin_slider.h"
#include "editor/inspector_dock.h"
#include "scene/gui/button.h"
#include "scene/resources/packed_scene.h"
bool EditorPropertyArrayObject::_set(const StringName &p_name, const Variant &p_value) {
	String name = p_name;
	if (!name.begins_with("indices") && !name.begins_with(PackedScene::META_POINTER_PROPERTY_BASE + "indices")) {
		return false;
	}
	int index;
	if (name.begins_with("metadata/")) {
		index = name.get_slice("/", 2).to_int();
	} else {
		index = name.get_slice("/", 1).to_int();
	}
	array.set(index, p_value);
	return true;
}
bool EditorPropertyArrayObject::_get(const StringName &p_name, Variant &r_ret) const {