### 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() == "--write-movie") {
			if (I->next()) {
				Engine::get_singleton()->set_write_movie_path(I->next()->get());
				N = I->next()->next();
				if (fixed_fps == -1) {
					fixed_fps = 60;
				}
				OS::get_singleton()->_writing_movie = true;
			} else {
				OS::get_singleton()->print("Missing write-movie argument, aborting.\n");
				goto error;
			}
		} else if (I->get() == "--disable-vsync") {
			disable_vsync = true;
		} else if (I->get() == "--print-fps") {
			print_fps = true;
		} else if (I->get() == "--profile-gpu") {
			profile_gpu = true;
		} else if (I->get() == "--disable-crash-handler") {
			OS::get_singleton()->disable_crash_handler();
		} else if (I->get() == "--skip-breakpoints") {
			skip_breakpoints = true;
		} else if (I->get() == "--xr-mode") {
			if (I->next()) {
				String xr_mode = I->next()->get().to_lower();
				N = I->next()->next();
				if (xr_mode == "default") {
					XRServer::set_xr_mode(XRServer::XRMODE_DEFAULT);
				} else if (xr_mode == "off") {
					XRServer::set_xr_mode(XRServer::XRMODE_OFF);