### 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)
EditorResourcePreview::get_singleton()->check_for_invalidation(p_file);
		return;
	}
	Ref<ResourceImporter> importer;
	bool load_default = false;
	
	if (!importer_name.is_empty()) {
		importer = ResourceFormatImporter::get_singleton()->get_importer_by_name(importer_name);
	}
	if (importer.is_null()) {
		
		importer = ResourceFormatImporter::get_singleton()->get_importer_by_extension(p_file.get_extension());
		load_default = true;
		if (importer.is_null()) {
			ERR_PRINT("BUG: File queued for import, but can't be imported, importer for type '" + importer_name + "' not found.");
			ERR_FAIL();
		}
	}
	
	List<ResourceImporter::ImportOption> opts;
	importer->get_import_options(p_file, &opts);
	for (const ResourceImporter::ImportOption &E : opts) {
		if (!params.has(E.option.name)) { 
			params[E.option.name] = E.default_value;
		}
	}
	if (load_default && ProjectSettings::get_singleton()->has_setting("importer_defaults/" + importer->get_importer_name())) {
		
		Dictionary d = GLOBAL_GET("importer_defaults/" + importer->get_importer_name());
		List<Variant> v;