Convert 'display_revenues' setting to feature flag

[MAILPOET-2008]

lib/Cron/Workers/StatsNotifications/Worker.php

@@ -5,6 +5,7 @@ namespace MailPoet\Cron\Workers\StatsNotifications;
 use Carbon\Carbon;
 use MailPoet\Config\Renderer;
 use MailPoet\Cron\CronHelper;
+use MailPoet\Features\FeaturesController;
 use MailPoet\Mailer\Mailer;
 use MailPoet\Models\Newsletter;
 use MailPoet\Models\NewsletterLink;
@@ -32,6 +33,9 @@ class Worker {
   /** @var SettingsController */
   private $settings;
 
+  /** @var FeaturesController */
+  private $features_controller;
+
   /** @var WCHelper */
   private $woocommerce_helper;
 
@@ -39,6 +43,7 @@ class Worker {
     Mailer $mailer,
     Renderer $renderer,
     SettingsController $settings,
+    FeaturesController $features_controller,
     WCHelper $woocommerce_helper,
     $timer = false
   ) {
@@ -46,6 +51,7 @@ class Worker {
     $this->renderer = $renderer;
     $this->mailer = $mailer;
     $this->settings = $settings;
+    $this->features_controller = $features_controller;
     $this->woocommerce_helper = $woocommerce_helper;
   }
 
@@ -103,7 +109,7 @@ class Worker {
     return $newsletter
       ->withSendingQueue()
       ->withTotalSent()
-      ->withStatistics($this->woocommerce_helper);
+      ->withStatistics($this->woocommerce_helper, $this->features_controller);
   }
 
   /**