### 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
if (r_frame != nullptr) {
		*r_frame = nullptr;
	}
	if (r_line != nullptr) {
		*r_line = 0;
	}
	Item *item = p_item;
	while (item) {
		if (item->parent != nullptr && item->parent->type == ITEM_FRAME) {
			if (r_frame != nullptr) {
				*r_frame = static_cast<ItemFrame *>(item->parent);
			}
			if (r_line != nullptr) {
				*r_line = item->line;
			}
			return;
		}
		item = item->parent;
	}
}
RichTextLabel::Item *RichTextLabel::_find_indentable(Item *p_item) {