### 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
Control *child = nullptr;
	for (int i = p_from->get_child_count() - 1; i >= 0; i--) {
		Control *c = Object::cast_to<Control>(p_from->get_child(i));
		if (!c || !c->is_visible_in_tree() || c->is_set_as_top_level()) {
			continue;
		}
		child = c;
		break;
	}
	if (!child) {
		return p_from;
	}
	
	return _prev_control(child);
}
Control *Control::find_prev_valid_focus() const {