Remove HTML entities from post slug during cleaning

[devansh016]

What?

This PR ensures that HTML entities, such as &, are properly decoded when generating post slugs. It modifies the getEditedPostSlug selector to decode entities in post titles before cleaning them for slug creation.

Why?

The current implementation adds unnecessary HTML entities like amp to slugs when saving drafts. This behavior can cause confusion and lead to unnecessarily long or SEO-unfriendly URLs. For example, a draft title containing & becomes /ampersand-amp-and/, but upon publishing, it correctly becomes /ampersand-and/. This PR fixes the inconsistency by decoding HTML entities before cleaning the slug.

Fixes #62543

How?

• Added decodeEntities from @wordpress/html-entities to the getEditedPostSlug selector.
• Updated the slug-cleaning process to decode HTML entities in the post title before passing it to cleanForSlug.

Code changes are minimal and located in packages/editor/src/store/selectors.js.

Testing Instructions

1. Go to Settings > Permalinks and set the permalink structure to "Post name".
2. Create a new post with a title containing special characters, e.g., Ampersand & And.
3. Save the post as a draft.
4. Check the generated URL in the editor sidebar.
   • Before: /ampersand-amp-and/
   • After: /ampersand-and/
5. Publish the post and confirm the URL remains /ampersand-and/.

Testing Instructions for Keyboard

Screenshots or screencast

Before	After

[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.

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

Co-authored-by: devansh016 <devansh2002@git.wordpress.org>
Co-authored-by: Mamaduka <mamaduka@git.wordpress.org>
Co-authored-by: Soean <soean@git.wordpress.org>
Co-authored-by: t-hamano <wildworks@git.wordpress.org>
Co-authored-by: 2ndkauboy <kau-boy@git.wordpress.org>
Co-authored-by: marcarmengou <marc4@git.wordpress.org>

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

[Mamaduka]

Thanks for contributing, @devansh016!

The referenced issue has a PR (#62549) with an ongoing review process. Just FYI.

[devansh016]

Thanks for contributing, @devansh016!

The referenced issue has a PR (#62549) with an ongoing review process. Just FYI.

Thanks, @Mamaduka! I’ve reviewed the other PR. My approach is slightly different, and the previous PR has been inactive for the past couple of months.