### 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 (selection.active && selection.from_frame && selection.from_line >= 0 && selection.from_line < (int)selection.from_frame->lines.size()) {
		
		float line_offset = selection.from_frame->lines[selection.from_line].offset.y;
		
		for (int i = 0; i < selection.from_frame->lines[selection.from_line].text_buf->get_line_count(); i++) {
			Vector2i range = selection.from_frame->lines[selection.from_line].text_buf->get_line_range(i);
			if (range.x <= selection.from_char && range.y >= selection.from_char) {
				break;
			}
			line_offset += selection.from_frame->lines[selection.from_line].text_buf->get_line_size(i).y + theme_cache.line_separation;
		}
		
		ItemFrame *it = selection.from_frame;
		while (it->parent_frame != nullptr) {
			line_offset += it->parent_frame->lines[it->line].offset.y;
			it = it->parent_frame;
		}
		vscroll->set_value(line_offset);
	}
}
void RichTextLabel::scroll_to_paragraph(int p_paragraph) {