### 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)
p_progress.update(idx, total);
	}
	for (List<String>::Element *E = files.front(); E; E = E->next(), idx++) {
		String ext = E->get().get_extension().to_lower();
		if (!valid_extensions.has(ext)) {
			continue; 
		}
		EditorFileSystemDirectory::FileInfo *fi = memnew(EditorFileSystemDirectory::FileInfo);
		fi->file = E->get();
		String path = cd.path_join(fi->file);
		FileCache *fc = file_cache.getptr(path);
		uint64_t mt = FileAccess::get_modified_time(path);
		if (import_extensions.has(ext)) {
			
			uint64_t import_mt = 0;
			if (FileAccess::exists(path + ".import")) {
				import_mt = FileAccess::get_modified_time(path + ".import");
			}
			if (fc && fc->modification_time == mt && fc->import_modification_time == import_mt && !_test_for_reimport(path, true)) {
				fi->type = fc->type;
				fi->resource_script_class = fc->resource_script_class;
				fi->uid = fc->uid;
				fi->deps = fc->deps;
				fi->modified_time = fc->modification_time;
				fi->import_modified_time = fc->import_modification_time;
				fi->import_valid = fc->import_valid;
				fi->script_class_name = fc->script_class_name;
				fi->import_group_file = fc->import_group_file;
				fi->script_class_extends = fc->script_class_extends;
				fi->script_class_icon_path = fc->script_class_icon_path;