Added a default locale setting during application initialization.

Signed-off-by: Andrey Novakovskiy <[email protected]>

system/CodeIgniter.php

@@ -180,6 +180,9 @@ public function __construct($config)
 	 */
 	public function initialize()
 	{
+		// Set default locale on the server
+		locale_set_default($this->config->defaultLocale ?? 'en');
+
 		// Set default timezone on the server
 		date_default_timezone_set($this->config->appTimezone ?? 'UTC');