massive custom modules and themes D11 compatibility

web/modules/custom/images_styles_gen/images_styles_gen.info.yml

@@ -1,7 +1,7 @@
 name: 'images_styles_cron_gen'
 type: module
 description: 'helpers for progressive decoupling'
-core_version_requirement: ^8.8 || ^9.2 || ^10.2
+core_version_requirement: ^8.8 || ^9.2 || ^10.2 || ^11
 package: 'custom'
 # https://www.flocondetoile.fr/blog/generate-programmatically-image-styles-drupal-8
 # https://www.flocondetoile.fr/blog/using-drupal-8-cron-api-generate-image-styles

web/modules/custom/images_styles_gen/src/CreateImagesStyles.php

@@ -34,6 +34,6 @@ class CreateImagesStyles {
     else {
       $message = t('Finished with an error.');
     }
-    drupal_set_message($message);
+    \Drupal::messenger()->addStatus($message);
   }
 }