### 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)
ERR_FAIL_INDEX_V(p_idx, subdirs.size(), nullptr);
	return subdirs[p_idx];
}
int EditorFileSystemDirectory::get_file_count() const {
	return files.size();
}
String EditorFileSystemDirectory::get_file(int p_idx) const {
	ERR_FAIL_INDEX_V(p_idx, files.size(), "");
	return files[p_idx]->file;
}
String EditorFileSystemDirectory::get_path() const {
	String p;
	const EditorFileSystemDirectory *d = this;
	while (d->parent) {
		p = d->name.path_join(p);
		d = d->parent;
	}
	return "res://" + p;
}
String EditorFileSystemDirectory::get_file_path(int p_idx) const {
	String file = get_file(p_idx);
	const EditorFileSystemDirectory *d = this;
	while (d->parent) {
		file = d->name.path_join(file);
		d = d->parent;
	}
	return "res://" + file;
}
Vector<String> EditorFileSystemDirectory::get_file_deps(int p_idx) const {