### 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
}
EditorPropertyPath::EditorPropertyPath() {
	HBoxContainer *path_hb = memnew(HBoxContainer);
	add_child(path_hb);
	path = memnew(LineEdit);
	SET_DRAG_FORWARDING_CDU(path, EditorPropertyPath);
	path->set_structured_text_bidi_override(TextServer::STRUCTURED_TEXT_FILE);
	path_hb->add_child(path);
	path->connect("text_submitted", callable_mp(this, &EditorPropertyPath::_path_selected));
	path->connect("focus_exited", callable_mp(this, &EditorPropertyPath::_path_focus_exited));
	path->set_h_size_flags(SIZE_EXPAND_FILL);
	path_edit = memnew(Button);
	path_edit->set_clip_text(true);
	path_hb->add_child(path_edit);
	add_focusable(path);
	dialog = nullptr;
	path_edit->connect("pressed", callable_mp(this, &EditorPropertyPath::_path_pressed));
}
void EditorPropertyClassName::_set_read_only(bool p_read_only) {
	property->set_disabled(p_read_only);
}
void EditorPropertyClassName::setup(const String &p_base_type, const String &p_selected_type) {
	base_type = p_base_type;
	dialog->set_base_type(base_type);
	selected_type = p_selected_type;
	property->set_text(selected_type);
}
void EditorPropertyClassName::update_property() {