### 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)
update_script_mutex.lock();
	for (const String &path : update_script_paths) {
		ScriptServer::remove_global_class_by_path(path); 
		int index = -1;
		EditorFileSystemDirectory *efd = find_file(path, &index);
		if (!efd || index < 0) {
			
			continue;
		}
		if (!efd->files[index]->script_class_name.is_empty()) {
			String lang;
			for (int j = 0; j < ScriptServer::get_language_count(); j++) {
				if (ScriptServer::get_language(j)->handles_global_class_type(efd->files[index]->type)) {
					lang = ScriptServer::get_language(j)->get_name();
				}
			}
			if (lang.is_empty()) {
				continue; 
			}
			ScriptServer::add_global_class(efd->files[index]->script_class_name, efd->files[index]->script_class_extends, lang, path);
			EditorNode::get_editor_data().script_class_set_icon_path(efd->files[index]->script_class_name, efd->files[index]->script_class_icon_path);
			EditorNode::get_editor_data().script_class_set_name(efd->files[index]->file, efd->files[index]->script_class_name);
		}
	}
	
	for (const String &path : update_script_paths) {
		int index = -1;
		EditorFileSystemDirectory *efd = find_file(path, &index);
		if (!efd || index < 0) {