### 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
sml->set_debug_collisions_hint(true);
		}
		if (debug_paths) {
			sml->set_debug_paths_hint(true);
		}
		if (debug_navigation) {
			sml->set_debug_navigation_hint(true);
		}
		if (debug_avoidance) {
			sml->set_debug_avoidance_hint(true);
		}
		if (debug_navigation || debug_avoidance) {
			NavigationServer3D::get_singleton()->set_active(true);
			NavigationServer3D::get_singleton()->set_debug_enabled(true);
			if (debug_navigation) {
				NavigationServer3D::get_singleton()->set_debug_navigation_enabled(true);
			}
			if (debug_avoidance) {
				NavigationServer3D::get_singleton()->set_debug_avoidance_enabled(true);
			}
		}
#endif
		if (single_threaded_scene) {
			sml->set_disable_node_threading(true);
		}
		bool embed_subwindows = GLOBAL_GET("display/window/subwindows/embed_subwindows");
		if (single_window || (!project_manager && !editor && embed_subwindows) || !DisplayServer::get_singleton()->has_feature(DisplayServer::Feature::FEATURE_SUBWINDOWS)) {
			sml->get_root()->set_embedding_subwindows(true);
		}
		ResourceLoader::add_custom_loaders();