### 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)
List<String> dirs;
	List<String> files;
	String cd = da->get_current_dir();
	p_dir->modified_time = FileAccess::get_modified_time(cd);
	da->list_dir_begin();
	while (true) {
		String f = da->get_next();
		if (f.is_empty()) {
			break;
		}
		if (da->current_is_hidden()) {
			continue;
		}
		if (da->current_is_dir()) {
			if (f.begins_with(".")) { 
				continue;
			}
			if (_should_skip_directory(cd.path_join(f))) {
				continue;
			}
			dirs.push_back(f);
		} else {
			files.push_back(f);
		}
	}
	da->list_dir_end();
	dirs.sort_custom<NaturalNoCaseComparator>();