Loads the admin textdomain for Site Health tests.

The WP_Site_Health class is defined in WP-Admin, while the REST API operates in a front-end context.
This means that the translations for Site Health won’t be loaded by default in load_default_textdomain() .

File: wp-includes/rest-api/endpoints/class-wp-rest-site-health-controller.php. View all references

protected function load_admin_textdomain() {
	// Accounts for inner REST API requests in the admin.
	if ( ! is_admin() ) {
		$locale = determine_locale();
		load_textdomain( 'default', WP_LANG_DIR . "/admin-$locale.mo" );
	}
}