### 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
state = p_by;
	state->set_path(get_path());
#ifdef TOOLS_ENABLED
	state->set_last_modified_time(get_last_modified_time());
#endif
}
void PackedScene::recreate_state() {
	state = Ref<SceneState>(memnew(SceneState));
	state->set_path(get_path());
#ifdef TOOLS_ENABLED
	state->set_last_modified_time(get_last_modified_time());
#endif
}
Ref<SceneState> PackedScene::get_state() const {