fix: lang() causes error on CLI

Call to undefined method CodeIgniter\HTTP\CLIRequest::getLocale()

Author: kenjis

system/Config/Services.php

@@ -75,6 +75,7 @@
 use Config\Toolbar as ToolbarConfig;
 use Config\Validation as ValidationConfig;
 use Config\View as ViewConfig;
+use Locale;
 
 /**
  * Services Configuration file.
@@ -363,8 +364,14 @@ public static function language(?string $locale = null, bool $getShared = true)
             return static::getSharedInstance('language', $locale)->setLocale($locale);
         }
 
+        if (AppServices::request() instanceof IncomingRequest) {
+            $requestLocale = AppServices::request()->getLocale();
+        } else {
+            $requestLocale = Locale::getDefault();
+        }
+
         // Use '?:' for empty string check
-        $locale = $locale ?: AppServices::request()->getLocale();
+        $locale = $locale ?: $requestLocale;
 
         return new Language($locale);
     }