### 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
}
			return table_offy;
		}
		off.y += TS->shaped_text_get_descent(rid) + theme_cache.line_separation;
	}
	
	if (line_clicked) {
		
		if (r_click_item != nullptr) {
			Item *it = p_frame->lines[p_line].from;
			Item *it_to = (p_line + 1 < (int)p_frame->lines.size()) ? p_frame->lines[p_line + 1].from : nullptr;
			if (char_pos >= 0) {
				*r_click_item = _get_item_at_pos(it, it_to, char_pos);
			} else {
				int stop = text_rect_begin;
				*r_click_item = _find_indentable(it);
				while (*r_click_item) {
					Ref<Font> font = theme_cache.normal_font;
					int font_size = theme_cache.normal_font_size;
					ItemFont *font_it = _find_font(*r_click_item);
					if (font_it) {
						if (font_it->font.is_valid()) {
							font = font_it->font;
						}
						if (font_it->font_size > 0) {
							font_size = font_it->font_size;
						}
					}
					ItemFontSize *font_size_it = _find_font_size(*r_click_item);
					if (font_size_it && font_size_it->font_size > 0) {