### 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 (!is_inside_tree()) {
		return;
	}
	MutexLock data_lock(data_mutex);
	Rect2 text_rect = _get_text_rect();
	float ctrl_height = get_size().height;
	int fi = main->first_invalid_line.load();
	int total_chars = main->lines[fi].char_offset;
	float old_scroll = vscroll->get_value();
	float total_height = 0;
	if (fi != 0) {
		int sr = MIN(main->first_invalid_font_line.load(), main->first_resized_line.load());
		
		for (int i = main->first_invalid_font_line.load(); i < fi; i++) {
			_update_line_font(main, i, theme_cache.normal_font, theme_cache.normal_font_size);
			main->first_invalid_font_line.store(i);
			if (stop_thread.load()) {
				return;
			}
		}
		
		if (sr != 0) {
			total_height = _calculate_line_vertical_offset(main->lines[sr - 1]);
		}