### 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
ERR_FAIL_COND_V(p_frame == nullptr, false);
	ERR_FAIL_COND_V(p_line < 0 || p_line >= (int)p_frame->lines.size(), false);
	Line &l = p_frame->lines[p_line];
	String txt;
	Item *it_to = (p_line + 1 < (int)p_frame->lines.size()) ? p_frame->lines[p_line + 1].from : nullptr;
	for (Item *it = l.from; it && it != it_to; it = _get_next_item(it)) {
		switch (it->type) {
			case ITEM_NEWLINE: {
				txt += "\n";
			} break;
			case ITEM_TEXT: {
				ItemText *t = static_cast<ItemText *>(it);
				txt += t->text;
			} break;
			case ITEM_IMAGE: {
				txt += " ";
			} break;
			case ITEM_TABLE: {
				ItemTable *table = static_cast<ItemTable *>(it);