Wrap blocked domains and keywords in collapsible details element

[obenland]

Before	After

Proposed changes:

• Wrap blocked domains and keywords tables in collapsible <details> elements.
• Display count in summary (e.g., "82 blocked domains") so users know how many items exist.
• Keep add form always visible outside the collapsible section.
• Reduces visual clutter when many domains/keywords are blocked.

Other information:

• Have you written new tests for your changes, if applicable?

Testing instructions:

• Go to Settings → ActivityPub → Moderation tab.
• Add several blocked domains or keywords.
• Verify the table is collapsed by default showing "X blocked domains/keywords".
• Click the summary to expand and see the full list.
• Verify the add form remains visible when collapsed.

Changelog entry

• Automatically create a changelog entry from the details below.

Changelog Entry Details

Significance

• Patch
• Minor
• Major

Type

• Added - for new features
• Changed - for changes in existing functionality
• Deprecated - for soon-to-be removed features
• Removed - for now removed features
• Fixed - for any bug fixes
• Security - in case of vulnerabilities

Message

Wrap blocked domains and keywords tables in collapsible details element.

[Copilot]

Pull request overview

This PR improves the user experience in the ActivityPub moderation settings by making blocked domains and keywords lists collapsible. Users can now see at a glance how many items are blocked without being overwhelmed by long lists, while still having easy access to the full list when needed.

Key Changes:

• Wrapped blocked domains and keywords tables in HTML <details> elements with summary text showing the count
• Added count display using WordPress i18n plural functions
• Kept add forms visible outside collapsible sections to maintain easy access

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
includes/wp-admin/class-settings-fields.php	Added collapsible <details> wrapper with count display for both blocked domains and keywords tables
.github/changelog/2591-from-description	Added changelog entry documenting the UI improvement

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