Fix: missing className on latest comments block

[jorgefilipecosta]

Description

Fixes: #13773
The custom className was not being applied on the latest comments block.

How has this been tested?

I added a latest comments block; I checked using the browser inspector that on the editor by default no class name is applied and no unrequired empty spaces exist on the class field. I published the post and repeated the same checks on the frontend.

I added a custom className to the block and verified it was applied on the editor and the frontend.

I removed the className and verified the className was removed, and no unrequired empty spaces were added.

[noisysocks]

LGTM! 👍

It was challenging to test because when the Gutenberg plugin is installed with WordPress 5.0, we don't require packages/block-library/src/latest-comments/index.php and so this change doesn't appear. I manually applied the diff to the Core PHP files. Not sure how we can make this easier.

[youknowriad]

Not sure how we can make this easier.

@aduth is working on improving this in #13521

[jorgefilipecosta]

Thank you for review @noisysocks!

It was challenging to test because when the Gutenberg plugin is installed with WordPress 5.0, we don't require packages/block-library/src/latest-comments/index.php and so this change doesn't appear. I manually applied the diff to the Core PHP files. Not sure how we can make this easier.

I'm sorry for the trouble caused I should have referred this need in the PR description.

[noisysocks]

No apology necessary, Jorge! 🙂 Thanks for fixing this.