### Godot version

Godot 4.1-beta2

### System information

Manjaro Gnome, Intel Core i7-11800H

### Issue description

On a relatively modern laptop (Intel Core i7-11800H), in a scene with many scripted nodes (total of 900+ with roughly half of them scripted), adding or duplicating a node freezes the editor for several seconds. Godot 4.0.2 handles such scenes much better!

Here is a flame graph captured while repeatedly duplicating simple Marker2D nodes with Ctrl+D in a complicated scene:
![Screenshot from 2023-06-15 23-54-38](https://github.com/godotengine/godot/assets/2766569/d0019f17-9b82-4a26-9b47-71fa7a3bef3a)

Performance data file to use with hotspot v1.4.1 (relevant data starts at the 75-second mark and lasts about 20+ seconds):
[perf.data.perfparser.zip](https://github.com/godotengine/godot/files/11763700/perf.data.perfparser.zip)



### Steps to reproduce

1) Add 1000 nodes with a script attached.
2) Duplicate a node and witness lags.

Also affects scrolling the scene tree dock.

### Minimal reproduction project

[add_node_lags_repro.zip](https://github.com/godotengine/godot/files/11763731/add_node_lags_repro.zip)

return _script_class_file_to_path.has(p_path) ? _script_class_file_to_path[p_path] : StringName();
}
void EditorData::script_class_set_name(const String &p_path, const StringName &p_class) {
	_script_class_file_to_path[p_path] = p_class;
}
void EditorData::script_class_save_icon_paths() {
	Array script_classes = ProjectSettings::get_singleton()->get_global_class_list();
	Dictionary d;
	for (const KeyValue<StringName, String> &E : _script_class_icon_paths) {
		if (ScriptServer::is_global_class(E.key)) {
			d[E.key] = E.value;
		}
	}
	for (int i = 0; i < script_classes.size(); i++) {
		Dictionary d2 = script_classes[i];
		if (!d2.has("class")) {
			continue;
		}
		d2["icon"] = d.get(d2["class"], "");
	}
	ProjectSettings::get_singleton()->store_global_class_list(script_classes);
}
void EditorData::script_class_load_icon_paths() {