### Godot version

4.1 db5113d

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

![image](https://github.com/godotengine/godot/assets/2223172/ee391a0d-44b7-4a35-bfa5-40d47af75f65)
Notice the empty space to the right. I actually have a worse case in my project, but I couldn't reproduce it outside:
![](https://chat.godotengine.org/file-upload/X3RMM5A9gN7RZEizo/Clipboard%20-%202%20czerwca%202023%2022:54)
Regression from #77651
CC @Rindbee 

### Steps to reproduce

1. Add a new script
2. Name it `;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;.gd`
3. Hover its name in the Script Editor

### Minimal reproduction project

N/A
if (!is_inside_tree()) {
		return;
	}
	if (pending_sort) {
		return;
	}
	MessageQueue::get_singleton()->push_callable(callable_mp(this, &Container::_sort_children));
	pending_sort = true;
}
Vector<int> Container::get_allowed_size_flags_horizontal() const {
	Vector<int> flags;
	if (GDVIRTUAL_CALL(_get_allowed_size_flags_horizontal, flags)) {
		return flags;
	}
	flags.append(SIZE_FILL);
	flags.append(SIZE_EXPAND);
	flags.append(SIZE_SHRINK_BEGIN);
	flags.append(SIZE_SHRINK_CENTER);
	flags.append(SIZE_SHRINK_END);
	return flags;
}
Vector<int> Container::get_allowed_size_flags_vertical() const {