Bootstrap/Load: Use `wp_load_translations_early()` when Translation API is not yet loaded.

Props spacedmonkey.
Fixes #45932. See #44458.


git-svn-id: https://develop.svn.wordpress.org/trunk@44622 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-shutdown-handler.php

@@ -141,9 +141,7 @@ class WP_Shutdown_Handler {
 	 */
 	protected function get_error_message_markup() {
 		if ( ! function_exists( '__' ) ) {
-			function __( $text ) {
-				return $text;
-			}
+			wp_load_translations_early();
 		}
 
 		$message = sprintf(