### 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)
group_file = String();
		} else if (!group_file.is_empty()) {
			
			groups_to_reimport.insert(group_file);
		} else {
			
			ImportFile ifile;
			ifile.path = file;
			ResourceFormatImporter::get_singleton()->get_import_order_threads_and_importer(file, ifile.order, ifile.threaded, ifile.importer);
			reloads.push_back(file);
			reimport_files.push_back(ifile);
		}
		
		EditorFileSystemDirectory *fs = nullptr;
		int cpos = -1;
		if (_find_file(file, &fs, cpos)) {
			fs->files.write[cpos]->import_group_file = group_file;
		}
	}
	reimport_files.sort();
	bool use_multiple_threads = GLOBAL_GET("editor/import/use_multiple_threads");
	int from = 0;
	for (int i = 0; i < reimport_files.size(); i++) {
		if (groups_to_reimport.has(reimport_files[i].path)) {
			continue;
		}
		if (use_multiple_threads && reimport_files[i].threaded) {
			if (i + 1 == reimport_files.size() || reimport_files[i + 1].importer != reimport_files[from].importer) {
				if (from - i == 0) {