### 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
} else if (I->get() == "--path") { // set path of project to start or edit
			if (I->next()) {
				String p = I->next()->get();
				if (OS::get_singleton()->set_cwd(p) != OK) {
					OS::get_singleton()->print("Invalid project path specified: \"%s\", aborting.\n", p.utf8().get_data());
					goto error;
				}
				N = I->next()->next();
			} else {
				OS::get_singleton()->print("Missing relative or absolute path, aborting.\n");
				goto error;
			}
		} else if (I->get() == "-u" || I->get() == "--upwards") { 
			upwards = true;
		} else if (I->get() == "--quit") { 
			quit_after = 1;
		} else if (I->get() == "--quit-after") { 
			if (I->next()) {
				quit_after = I->next()->get().to_int();
				N = I->next()->next();
			} else {
				OS::get_singleton()->print("Missing number of iterations, aborting.\n");
				goto error;
			}
		} else if (I->get().ends_with("project.godot")) {
			String path;
			String file = I->get();
			int sep = MAX(file.rfind("/"), file.rfind("\\"));
			if (sep == -1) {
				path = ".";