### 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
bool is_grabbing = false;
	for (int i = 0; i < 3; i++) {
		is_grabbing |= euler[i]->is_grabbing();
	}
	return is_grabbing;
}
void EditorPropertyQuaternion::update_property() {
	Quaternion val = get_edited_property_value();
	setting = true;
	spin[0]->set_value(val.x);
	spin[1]->set_value(val.y);
	spin[2]->set_value(val.z);
	spin[3]->set_value(val.w);
	if (!is_grabbing_euler()) {
		Vector3 v = val.normalized().get_euler();
		edit_euler.x = Math::rad_to_deg(v.x);
		edit_euler.y = Math::rad_to_deg(v.y);
		edit_euler.z = Math::rad_to_deg(v.z);
		euler[0]->set_value(edit_euler.x);
		euler[1]->set_value(edit_euler.y);
		euler[2]->set_value(edit_euler.z);
	}
	setting = false;
}
void EditorPropertyQuaternion::_warning_pressed() {