I’m having trouble setting up a basic Omnisend review integration

Before resorting to adding custom Liquid code directly into the theme, I’m hoping to find a simpler workaround - something that would be easy for my client to enable or disable as needed.

However, I’m getting the following error:

“product-reviews” not added. Liquid templates don’t support sections and blocks.

Has anyone found a clean way to display product reviews (or even just star ratings) in Omnisend emails without relying on {% section %} tags, which obviously aren’t supported in this context?