How do I fix my email templates?

I just upgraded to 2.4.3-p2 and a lot of my email templates broke. I can see in the release notes there were some backward incompatible changes made. I figured I would just have to redo them.

I would like to show items on the order confirmation. I click insert variable and it adds this-

{{layout handle=”sales_email_order_items” order=$order}}

But it doesn’t work. Did they leave the old variables in? I figured they would have switched those out so you could still build email templates. How should that look to work?