### Godot version

4.1.rc.custom_build. c83f912bc

### System information

Ubuntu 22.04 CI

### Issue description

When executing
```
extends Node
func _process(delta):

	var temp_variable35241 = RichTextLabel.new()
	add_child(temp_variable35241)
	temp_variable35241.set_fit_content(true)
	temp_variable35241.parse_bbcode("3188932498")
	temp_variable35241.queue_free()
```
this code freeze project in CI for at least 60 seconds

### Steps to reproduce

Above

### Minimal reproduction project

N/A
Item *item = p_item;
	Item *prev_item = p_item;
	int level = 0;
	while (item) {
		if (item->type == ITEM_LIST) {
			ItemList *list = static_cast<ItemList *>(item);
			ItemFrame *frame = nullptr;
			int line = -1;
			_find_frame(list, &frame, &line);
			int index = 1;
			if (frame != nullptr) {
				for (int i = list->line + 1; i <= prev_item->line && i < (int)frame->lines.size(); i++) {
					if (_find_list_item(frame->lines[i].from) == list) {
						index++;
					}
				}
			}
			r_index.push_back(index);
			r_list.push_back(list);
			prev_item = item;
		}
		level++;
		item = item->parent;
	}
	return level;
}
int RichTextLabel::_find_margin(Item *p_item, const Ref<Font> &p_base_font, int p_base_font_size) {