### 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
OS::get_singleton()->print("  --export-release <preset> <path>  Export the project in release mode using the given preset and output path. The preset name should match one defined in export_presets.cfg.\n");
	OS::get_singleton()->print("                                    <path> should be absolute or relative to the project directory, and include the filename for the binary (e.g. 'builds/game.exe').\n");
	OS::get_singleton()->print("                                    The target directory must exist.\n");
	OS::get_singleton()->print("  --export-debug <preset> <path>    Export the project in debug mode using the given preset and output path. See --export-release description for other considerations.\n");
	OS::get_singleton()->print("  --export-pack <preset> <path>     Export the project data only using the given preset and output path. The <path> extension determines whether it will be in PCK or ZIP format.\n");
#ifndef DISABLE_DEPRECATED
	OS::get_singleton()->print("  --convert-3to4 [<max_file_kb>] [<max_line_size>]\n");
	OS::get_singleton()->print("                                    Converts project from Godot 3.x to Godot 4.x.\n");
	OS::get_singleton()->print("  --validate-conversion-3to4 [<max_file_kb>] [<max_line_size>]\n");
	OS::get_singleton()->print("                                    Shows what elements will be renamed when converting project from Godot 3.x to Godot 4.x.\n");
#endif 
	OS::get_singleton()->print("  --doctool [<path>]                Dump the engine API reference to the given <path> (defaults to current dir) in XML format, merging if existing files are found.\n");
	OS::get_singleton()->print("  --no-docbase                      Disallow dumping the base types (used with --doctool).\n");
#ifdef MODULE_GDSCRIPT_ENABLED
	OS::get_singleton()->print("  --gdscript-docs <path>            Rather than dumping the engine API, generate API reference from the inline documentation in the GDScript files found in <path> (used with --doctool).\n");
#endif
	OS::get_singleton()->print("  --build-solutions                 Build the scripting solutions (e.g. for C# projects). Implies --editor and requires a valid project to edit.\n");
	OS::get_singleton()->print("  --dump-gdextension-interface      Generate GDExtension header file 'gdextension_interface.h' in the current folder. This file is the base file required to implement a GDExtension.\n");
	OS::get_singleton()->print("  --dump-extension-api              Generate JSON dump of the Godot API for GDExtension bindings named 'extension_api.json' in the current folder.\n");
	OS::get_singleton()->print("  --validate-extension-api <path>   Validate an extension API file dumped (with the option above) from a previous version of the engine to ensure API compatibility. If incompatibilities or errors are detected, the return code will be non zero.\n");
	OS::get_singleton()->print("  --benchmark                       Benchmark the run time and print it to console.\n");
	OS::get_singleton()->print("  --benchmark-file <path>           Benchmark the run time and save it to a given file in JSON format. The path should be absolute.\n");
#ifdef TESTS_ENABLED
	OS::get_singleton()->print("  --test [--help]                   Run unit tests. Use --test --help for more information.\n");
#endif
#endif
	OS::get_singleton()->print("\n");
}
#ifdef TESTS_ENABLED
Error Main::test_setup() {