### 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)
scanning = false;
		_update_pending_script_classes();
		emit_signal(SNAME("filesystem_changed"));
		emit_signal(SNAME("sources_changed"), sources_changed.size() > 0);
		first_scan = false;
	} else {
		ERR_FAIL_COND(thread.is_started());
		set_process(true);
		Thread::Settings s;
		scanning = true;
		scan_total = 0;
		s.priority = Thread::PRIORITY_LOW;
		thread.start(_thread_func, this, s);
		
		
	}
}
void EditorFileSystem::ScanProgress::update(int p_current, int p_total) const {
	float ratio = low + ((hi - low) / p_total) * p_current;
	progress->step(ratio * 1000);
	EditorFileSystem::singleton->scan_total = ratio;
}
EditorFileSystem::ScanProgress EditorFileSystem::ScanProgress::get_sub(int p_current, int p_total) const {
	ScanProgress sp = *this;
	float slice = (sp.hi - sp.low) / p_total;
	sp.low += slice * p_current;
	sp.hi = slice;
	return sp;
}
void EditorFileSystem::_scan_new_dir(EditorFileSystemDirectory *p_dir, Ref<DirAccess> &da, const ScanProgress &p_progress) {