Core blocks: Block alignment and text alignment should use different and consistent attribute names

[ZebulanStanphill]

The issue

I have noticed that supports: { align: true } adds an align attribute to a block. Notably, core blocks that have text alignment options tend to name the text alignment attribute align. I think this is confusing, and it makes it difficult to update blocks to support block alignment later on. I think the name used for block alignment vs text alignment attributes should be made more consistent.

Proposed solution

I think that block alignment attributes should remain as align, and I think text alignment attributes should be called textAlign.

Related issues and PRs

• Alignment: paragraph and text columns block alignment attribute name is width #7912

[0aveRyan]

This is a great callout @ZebulanStanphill! Particularly helpful if a block is right-aligned but has centered text (many quote treatments).

[youknowriad]

I think it's too late to change any block attribute at the moment.
Also there has been some work recently to bring consistency to the "align" support usage. Right @ZebulanStanphill