### 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)
ia.file = f;
					ia.new_dir = efd;
					scan_actions.push_back(ia);
				} else {
					p_dir->subdirs[idx]->verified = true;
				}
			} else {
				String ext = f.get_extension().to_lower();
				if (!valid_extensions.has(ext)) {
					continue; 
				}
				int idx = p_dir->find_file_index(f);
				if (idx == -1) {
					
					EditorFileSystemDirectory::FileInfo *fi = memnew(EditorFileSystemDirectory::FileInfo);
					fi->file = f;
					String path = cd.path_join(fi->file);
					fi->modified_time = FileAccess::get_modified_time(path);
					fi->import_modified_time = 0;
					fi->type = ResourceLoader::get_resource_type(path);
					fi->resource_script_class = ResourceLoader::get_resource_script_class(path);
					if (fi->type == "" && textfile_extensions.has(ext)) {
						fi->type = "TextFile";
					}
					fi->script_class_name = _get_global_script_class(fi->type, path, &fi->script_class_extends, &fi->script_class_icon_path);
					fi->import_valid = fi->type == "TextFile" ? true : ResourceLoader::is_import_valid(path);
					fi->import_group_file = ResourceLoader::get_import_group_file(path);
					{
						ItemAction ia;
						ia.action = ItemAction::ACTION_FILE_ADD;