Get_block_wrapper_attributes missing align class

This may be similar to #739, but when creating a simple ACF block test using the get_block_wrapper_attributes function in my render file, it outputs the top level class for my block name (.wp-block-cab-test), but doesn't output the wide alignment class that I've set on the block by default. It shows wide on the backend, but when I change it to alignnone, on the frontend it now outputs an extra class of just align.

Doing the same test in a custom (non-ACF) WP block outputs the align class correctly, so I wanted to see if I was missing something here or merely _doing_it_wrong.

Here's a simplified test block for reference.

Start with the simplified ACF block test linked in the issue and its render file, then compare get_block_wrapper_attributes output with the custom non-ACF block example. Check the default wide alignment and the alignnone case; done means the frontend emits the expected alignment class in both cases.