### 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
after_list_open_tag = false;
			if (tag == "/ol" || tag == "/ul") {
				if (!txt.is_empty()) {
					
					
					if (!txt.ends_with("\n")) {
						txt += "\n";
					}
				} else if (!after_list_close_tag) {
					txt = "\n"; 
				}
				after_list_close_tag = true;
			} else {
				after_list_close_tag = false;
			}
			if (!txt.is_empty()) {
				add_text(txt);
			}
			tag_stack.pop_front();
			pos = brk_end + 1;
			if (tag != "/img" && tag != "/dropcap") {
				pop();
			}
			continue;
		}
		if (tag == "ol" || tag.begins_with("ol ") || tag == "ul" || tag.begins_with("ul ")) {
			if (txt.is_empty() && after_list_open_tag) {
				txt = "\n"; 
			}
			after_list_open_tag = true;