### Godot version

4.1 24cb43a

### System information

Windows 10 x64

### Issue description

Every time I launch Godot, I'm greeted with this in my console:
```
ERROR: Resource file not found: res://InputEventKey_7cuxk.
   at: (core\io\resource_loader.cpp:227)
```
Seems to be only happening in Project Manager and comes from this:
![](https://chat.godotengine.org/file-upload/udqZP8NQfogp4rjRL/Clipboard%20-%2021%20kwietnia%202023%2022:24)
It's part of my `editor_settings-4.tres`. I didn't test, but I think it applies to any shortcut that you customize. For some reason ResourceLoader tries to load it as a project resource, while it's a sub-resource.

Does not happen in 4.0.2.

### Steps to reproduce

1. Open Godot 4.1 project manager
2. Check the console

### Minimal reproduction project

N/A
ts.instantiate();
		tsman->add_interface(ts);
	}
	physics_server_3d_manager = memnew(PhysicsServer3DManager);
	physics_server_2d_manager = memnew(PhysicsServer2DManager);
	register_server_types();
	initialize_modules(MODULE_INITIALIZATION_LEVEL_SERVERS);
	GDExtensionManager::get_singleton()->initialize_extensions(GDExtension::INITIALIZATION_LEVEL_SERVERS);
#ifdef TOOLS_ENABLED
	if (editor || project_manager || cmdline_tool) {
		EditorPaths::create();
		
		if (!init_use_custom_screen && (editor || project_manager) && EditorPaths::get_singleton()->are_paths_valid()) {
			Ref<DirAccess> dir = DirAccess::open(EditorPaths::get_singleton()->get_config_dir());
			String config_file_name = "editor_settings-" + itos(VERSION_MAJOR) + ".tres";
			String config_file_path = EditorPaths::get_singleton()->get_config_dir().path_join(config_file_name);
			if (dir->file_exists(config_file_name)) {
				Error err;
				Ref<FileAccess> f = FileAccess::open(config_file_path, FileAccess::READ, &err);
				if (f.is_valid()) {
					VariantParser::StreamFile stream;
					stream.f = f;
					String assign;
					Variant value;
					VariantParser::Tag next_tag;
					int lines = 0;
					String error_text;
					while (true) {
						assign = Variant();
						next_tag.fields.clear();