### 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
ERR_FAIL_COND_V_MSG(paths.size() == 0, false, "Couldn't find any GDScript files under the given directory: " + gdscript_docs_path);
		for (const String &path : paths) {
			Ref<GDScript> gdscript = ResourceLoader::load(path);
			for (const DocData::ClassDoc &class_doc : gdscript->get_documentation()) {
				docs.add_doc(class_doc);
			}
		}
		if (doc_tool_path == ".") {
			doc_tool_path = "./docs";
		}
		Ref<DirAccess> da = DirAccess::create_for_path(doc_tool_path);
		err = da->make_dir_recursive(doc_tool_path);
		ERR_FAIL_COND_V_MSG(err != OK, false, "Error: Can't create GDScript docs directory: " + doc_tool_path + ": " + itos(err));
		HashMap<String, String> doc_data_classes;
		err = docs.save_classes(doc_tool_path, doc_data_classes, false);
		ERR_FAIL_COND_V_MSG(err != OK, false, "Error saving GDScript docs:" + itos(err));
		OS::get_singleton()->set_exit_code(EXIT_SUCCESS);
		return false;
	}
#endif /
	if (!doc_tool_path.is_empty()) {
		/
		Engine::get_singleton()->set_editor_hint(true);
		/
		if (!locale.is_empty() && locale != "en") {
			load_doc_translations(locale);
		}
		{
			Ref<DirAccess> da = DirAccess::open(doc_tool_path);
			ERR_FAIL_COND_V_MSG(da.is_null(), false, "Argument supplied to --doctool must be a valid directory path.");