### 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
_validate_line_caches();
	if (p_paragraph <= 0) {
		vscroll->set_value(0);
	} else if (p_paragraph >= main->first_invalid_line.load()) {
		vscroll->set_value(vscroll->get_max());
	} else {
		vscroll->set_value(main->lines[p_paragraph].offset.y);
	}
}
int RichTextLabel::get_paragraph_count() const {
	return current_frame->lines.size();
}
int RichTextLabel::get_visible_paragraph_count() const {