The row block needs a special class name ex. ".is-row"

[premitheme]

What problem does this address?

I need to remove some top and bottom margins of the Row inner blocks that I originally added for the Group inner blocks, but I can't because there's no special class name to differentiate them as they both share the same class name. I'm not sure why the Row block doesn't have its own class (.wp-block-row), but at least I think it should have a special identifier, like adding ".is-row" class.

What is your proposed solution?

Add ".is-row" class name to the Row block.

[Mamaduka]

Thanks for contributing, @premitheme.

It looks like a duplicate of #38126, and there's also a PR that will add Row-specific class - #39181.