3459010: fix deprecated service issue

Closes #3459010

src/Entity/CronJob.php

@@ -260,7 +260,12 @@ class CronJob extends ConfigEntityBase implements CronJobInterface {
    * {@inheritdoc}
    */
   public function getProviderName(): string {
-    return $this->moduleHandler()->getName($this->provider);
+    if (\Drupal::hasService('extension.list.module')) {
+      return \Drupal::service('extension.list.module')->getName($this->provider);
+    }
+    else {
+      return $this->moduleHandler()->getName($this->provider);
+    }
   }
 
   /**