Paragraph block: migrate text align and add full wide supports

[shimotmk]

What?

Closes #31429

Paragraph block migrate text align and add full wide supports

Why?

Heading blocks have wide and full, but paragraph blocks do not.
There didn't seem to be any negative comments in the issue, so I made the adjustment.

How?

Testing Instructions

1. Open a post or page.
2. Insert a Paragraph block.
3. You can see that the toolbar allows you to set the text alignment to full width, wide, and so on.

Testing Instructions for Keyboard

Screenshots or screencast

Before

before.mp4

After

after.mp4

[github-actions]

Warning: Type of PR label mismatch

To merge this PR, it requires exactly 1 label indicating the type of PR. Other labels are optional and not being checked here.

• Type-related labels to choose from: [Type] Automated Testing, [Type] Breaking Change, [Type] Bug, [Type] Build Tooling, [Type] Code Quality, [Type] Copy, [Type] Developer Documentation, [Type] Enhancement, [Type] Experimental, [Type] Feature, [Type] New API, [Type] Task, [Type] Technical Prototype, [Type] Performance, [Type] Project Management, [Type] Regression, [Type] Security, [Type] WP Core Ticket, Backport from WordPress Core, Gutenberg Plugin.
• Labels found: .

Read more about Type labels in Gutenberg. Don't worry if you don't have the required permissions to add labels; the PR reviewer should be able to help with the task.

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Unlinked Accounts

The following contributors have not linked their GitHub and WordPress.org accounts: @SilasOtoko, @james-s-k, @patrickwc, @kaelansmith, @nickfmc.

Contributors, please read how to link your accounts to ensure your work is properly credited in WordPress releases.

If you're merging code through a pull request on GitHub, copy and paste the following into the bottom of the merge commit message.

Unlinked contributors: SilasOtoko, james-s-k, patrickwc, kaelansmith, nickfmc.

Co-authored-by: shimotmk <[email protected]>
Co-authored-by: richtabor <[email protected]>
Co-authored-by: paaljoachim <[email protected]>
Co-authored-by: silvanarnet <[email protected]>

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

[shimotmk]

If you do not create a new hook and delete the class name, the fixCustomClassname process will run and class names such as has-text-align-center will remain in the additional CSS classes.

[shimotmk]

This hook is necessary to handle deprecation from stored content.

It is useful when handling deprecation from stored content.