Site Health: Internationalizes count in the info section headings.

If a site health info section includes the `show_count` parameter, this commit internationalizes the count.

Follow-up to [45176].

Props johnbillion, swissspidy.
Fixes #54341.
Built from https://develop.svn.wordpress.org/trunk@51970


git-svn-id: http://core.svn.wordpress.org/trunk@51559 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/site-health-info.php

@@ -75,7 +75,10 @@ $health_check_site_status = WP_Site_Health::get_instance();
 						<?php
 
 						if ( isset( $details['show_count'] ) && $details['show_count'] ) {
-							printf( '(%d)', count( $details['fields'] ) );
+							printf(
+								'(%s)',
+								number_format_i18n( count( $details['fields'] ) )
+							);
 						}
 
 						?>

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51969';
+$wp_version = '5.9-alpha-51970';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.