### Godot version

4.0 beta (e1648b3327431a09cc9498663fac483275eb711d)

### System information

Mageia 9, Linux

### Issue description

When exporting a project with no attached script (or with only a builtin GDScript), the following error is printed:
```
ERROR: Can't open file from path 'res://.godot/global_script_class_cache.cfg'.
   at: get_file_as_bytes (core/io/file_access.cpp:699)
```

And while the export succeeds, when running the project, it prints:
```
ERROR: Couldn't find the given section "" and key "list", and no default was given.
   at: get_value (core/io/config_file.cpp:86)
```

We should ensure that this file is always created, regardless of whether there are scripts to parse for class names or not. It should always contain at least `list=[]`.

### Steps to reproduce

- Create new project
- Create main scene with no script
- Export

### Minimal reproduction project

[NewProj.zip](https://github.com/godotengine/godot/files/10547125/NewProj.zip)
if (!p_path.is_resource_file() || p_path.begins_with(ProjectSettings::get_singleton()->get_project_data_path())) {
		
		return ResourceUID::INVALID_ID;
	}
	EditorFileSystemDirectory *fs = nullptr;
	int cpos = -1;
	if (!singleton->_find_file(p_path, &fs, cpos)) {
		
		ResourceUID::ID fallback = ResourceLoader::get_resource_uid(p_path);
		if (fallback != ResourceUID::INVALID_ID) {
			return fallback;
		}
		if (p_generate) {
			return ResourceUID::get_singleton()->create_id(); 
		} else {
			return ResourceUID::INVALID_ID;
		}
	} else if (fs->files[cpos]->uid != ResourceUID::INVALID_ID) {
		return fs->files[cpos]->uid;
	} else if (p_generate) {
		return ResourceUID::get_singleton()->create_id(); 
	} else {
		return ResourceUID::INVALID_ID;
	}
}
static void _scan_extensions_dir(EditorFileSystemDirectory *d, HashSet<String> &extensions) {