I18N: Correct strict comparison in WP_Translations::translate_plural().

This ensures that the `$count` value is compared as an integer to account for plugins or themes passing a numeric string instead.

Follow-up to [57337].

Props dd32, mukesh27, swissspidy, pmbaldha, SergeyBiryukov.
Fixes #63642.
Built from https://develop.svn.wordpress.org/trunk@60484


git-svn-id: http://core.svn.wordpress.org/trunk@59820 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/l10n/class-wp-translations.php

@@ -124,7 +124,7 @@ class WP_Translations {
 		}
 
 		// Fall back to the original with English grammar rules.
-		return ( 1 === $count ? $singular : $plural );
+		return ( 1 === (int) $count ? $singular : $plural );
 	}
 
 	/**

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.9-alpha-60483';
+$wp_version = '6.9-alpha-60484';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.