I18N: Pass `$locale` parameter to `override_load_textdomain` filter.

In [53874] the `$locale` parameter was added to `load_textdomain()` so it can be used to properly fill `WP_Textdomain_Registry`. Since `$locale` may not be the same value as `determine_locale()` returns (e.g. when filtered by `plugin_locale` in `load_plugin_textdomain()`) this changeset also passes the `$locale` parameter to the filter so custom file loading implementations are using the same locale as `load_textdomain()` got.

Follow-up to [53874].

Props ocean90, cadic, SergeyBiryukov, swissspidy, costdev.
Fixes #57056.

Built from https://develop.svn.wordpress.org/trunk@55196


git-svn-id: http://core.svn.wordpress.org/trunk@54729 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/l10n.php

@@ -725,12 +725,14 @@ function load_textdomain( $domain, $mofile, $locale = null ) {
 	 * Filters whether to override the .mo file loading.
 	 *
 	 * @since 2.9.0
+	 * @since 6.2.0 Added the `$locale` parameter.
 	 *
 	 * @param bool        $override Whether to override the .mo file loading. Default false.
 	 * @param string      $domain   Text domain. Unique identifier for retrieving translated strings.
 	 * @param string      $mofile   Path to the MO file.
+	 * @param string|null $locale   Locale.
 	 */
-	$plugin_override = apply_filters( 'override_load_textdomain', false, $domain, $mofile );
+	$plugin_override = apply_filters( 'override_load_textdomain', false, $domain, $mofile, $locale );
 
 	if ( true === (bool) $plugin_override ) {
 		unset( $l10n_unloaded[ $domain ] );

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-alpha-55195';
+$wp_version = '6.2-alpha-55196';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.