### 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)
if (PackedData::get_singleton()->is_disabled()) {
		return false;
	}
	bool ok = PackedData::get_singleton()->add_pack(p_pack, p_replace_files, p_offset) == OK;
	if (!ok) {
		return false;
	}
	
	DirAccess::make_default<DirAccessPack>(DirAccess::ACCESS_RESOURCES);
	using_datapack = true;
	return true;
}
void ProjectSettings::_convert_to_last_version(int p_from_version) {
	if (p_from_version <= 3) {
		
		for (KeyValue<StringName, ProjectSettings::VariantContainer> &E : props) {
			Variant value = E.value.variant;
			if (String(E.key).begins_with("input/") && value.get_type() == Variant::ARRAY) {
				Array array = value;
				Dictionary action;
				action["deadzone"] = Variant(0.5f);
				action["events"] = array;
				E.value.variant = action;