### 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
memdelete(globals);
	}
	if (engine) {
		memdelete(engine);
	}
	if (packed_data) {
		memdelete(packed_data);
	}
	unregister_core_driver_types();
	unregister_core_extensions();
	unregister_core_types();
	OS::get_singleton()->_cmdline.clear();
	OS::get_singleton()->_user_args.clear();
	if (message_queue) {
		memdelete(message_queue);
	}
	OS::get_singleton()->benchmark_end_measure("core");
	OS::get_singleton()->finalize_core();
	locale = String();
	return exit_code;
}
Error Main::setup2() {
	Thread::make_main_thread(); 
	set_current_thread_safe_for_nodes(true);
	
	print_line(String(VERSION_NAME) + " v" + get_full_version_string() + " - " + String(VERSION_WEBSITE));
	OS::get_singleton()->benchmark_begin_measure("servers");
	tsman = memnew(TextServerManager);
	if (tsman) {
		Ref<TextServerDummy> ts;