### 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)
const String &file = E.key;
		String base_path = ResourceFormatImporter::get_singleton()->get_import_base_path(file);
		Vector<String> dest_paths;
		ResourceUID::ID uid = uids[file];
		{
			Ref<FileAccess> f = FileAccess::open(file + ".import", FileAccess::WRITE);
			ERR_FAIL_COND_V_MSG(f.is_null(), ERR_FILE_CANT_OPEN, "Cannot open import file '" + file + ".import'.");
			
			f->store_line("[remap]");
			f->store_line("");
			f->store_line("importer=\"" + importer->get_importer_name() + "\"");
			int version = importer->get_format_version();
			if (version > 0) {
				f->store_line("importer_version=" + itos(version));
			}
			if (!importer->get_resource_type().is_empty()) {
				f->store_line("type=\"" + importer->get_resource_type() + "\"");
			}
			if (uid == ResourceUID::INVALID_ID) {
				uid = ResourceUID::get_singleton()->create_id();
			}
			f->store_line("uid=\"" + ResourceUID::get_singleton()->id_to_text(uid) + "\""); 
			if (err == OK) {
				String path = base_path + "." + importer->get_save_extension();
				f->store_line("path=\"" + path + "\"");
				dest_paths.push_back(path);
			}
			f->store_line("group_file=" + Variant(p_group_file).get_construct_string());
			if (err == OK) {
				f->store_line("valid=true");