### 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
ERR_FAIL_COND_V(p_node < 0, false);
	if (p_node < nodes.size()) {
		const StringName *namep = names.ptr();
		for (int i = 0; i < nodes[p_node].groups.size(); i++) {
			if (namep[nodes[p_node].groups[i]] == p_group) {
				return true;
			}
		}
	}
	if (base_scene_node_remap.has(p_node)) {
		return get_base_scene_state()->is_node_in_group(base_scene_node_remap[p_node], p_group);
	}
	return false;
}
bool SceneState::disable_placeholders = false;
void SceneState::set_disable_placeholders(bool p_disable) {