### 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
register_scene_singletons();
	ERR_FAIL_COND_V(TextServerManager::get_singleton()->get_interface_count() == 0, ERR_CANT_CREATE);
	
	int max_features = 0;
	for (int i = 0; i < TextServerManager::get_singleton()->get_interface_count(); i++) {
		uint32_t features = TextServerManager::get_singleton()->get_interface(i)->get_features();
		int feature_number = 0;
		while (features) {
			feature_number += features & 1;
			features >>= 1;
		}
		if (feature_number >= max_features) {
			max_features = feature_number;
			text_driver_idx = i;
		}
	}
	if (text_driver_idx >= 0) {
		Ref<TextServer> ts = TextServerManager::get_singleton()->get_interface(text_driver_idx);
		TextServerManager::get_singleton()->set_primary_interface(ts);
		if (ts->has_feature(TextServer::FEATURE_USE_SUPPORT_DATA)) {
			ts->load_support_data("res://" + ts->get_support_data_filename());
		}
	} else {
		ERR_FAIL_V_MSG(ERR_CANT_CREATE, "TextServer: Unable to create TextServer interface.");
	}
	ClassDB::set_current_api(ClassDB::API_NONE);
	_start_success = true;
	return OK;
}
void Main::test_cleanup() {