### 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
last_color = picker->get_pick_color();
}
void EditorPropertyColor::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_TREE:
		case NOTIFICATION_THEME_CHANGED: {
			picker->set_custom_minimum_size(Size2(0, get_theme_constant(SNAME("color_picker_button_height"), SNAME("Editor"))));
		} break;
	}
}
void EditorPropertyColor::update_property() {
	picker->set_pick_color(get_edited_property_value());
	const Color color = picker->get_pick_color();
	
	if (picker->is_editing_alpha()) {
		picker->set_tooltip_text(vformat(
				"R: %s\nG: %s\nB: %s\nA: %s",
				rtos(color.r).pad_decimals(2),
				rtos(color.g).pad_decimals(2),
				rtos(color.b).pad_decimals(2),
				rtos(color.a).pad_decimals(2)));
	} else {
		picker->set_tooltip_text(vformat(
				"R: %s\nG: %s\nB: %s",
				rtos(color.r).pad_decimals(2),
				rtos(color.g).pad_decimals(2),
				rtos(color.b).pad_decimals(2)));
	}
}
void EditorPropertyColor::setup(bool p_show_alpha) {