Avoids polluting Layout functionality with Query Pagination specific requirements.

[matiasbenedetto]

Description

This characteristic was introduced here by this recently merged PR #36681 and currently it is only necesary for the Query Pagination.

As @ntsekouras suggested we would need to avoid adding extra logic to the Layout block support. So I made this litte refactor to move the functionality to the block's code.

How has this been tested?

Wordpress 5.8.2
Gutenberg latest trunk version

Screenshots

Types of changes

This is just a refactor and no functionality is changed.

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• [] I've tested my changes with keyboard and screen readers.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).

[jasmussen]

Thanks for all the effort. Is there any way we can avoid introducing a new classname and naming scheme? In general I feel like we should avoid the wp- prefix, and in this case we have an exiting naming scheme for justifications like these, items-justified-. What do you think?

[ntsekouras]

I'm closing this as the initial changes were eventually reverted. Thanks for your work here @matiasbenedetto!