Tag cloud: Reconsider the default padding on full width

[carolinan]

Description

When the tag cloud is full width, it has left and right padding:

	&.alignfull {
		padding-left: 1em;
		padding-right: 1em;
	}

This is unexpected, because the block doesn't look like it is full width. We should consider if it can be removed or moved to the legacy theme.scss file (wp-block-style).

It was added here: #27342, and I don't think the use case is valid an anymore now that themes can use useRootPaddingAwareAlignments

Step-by-step reproduction instructions

Add a tag cloud block.
Set it to full width.
See that there is some left and right padding.

Screenshots, screen recording, code snippet

No response

Environment info

No response

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[akasunil]

@carolinan Have we made a decision regarding the style's removal or transfer to legacy style yet?