MDL-54698 core_message: remove 'offline' checkbox for popup processor

message/classes/output/preferences/notification_list.php

@@ -147,6 +147,7 @@ class notification_list implements templatable, renderable {
 
             $context['processors'][] = [
                 'displayname' => get_string('pluginname', 'message_'.$processor->name),
+                'ispopup' => ($processor->name == 'popup'),
                 'name' => $processor->name,
                 'hassettings' => !empty($processor->object->config_form($preferences)),
                 'contextid' => $usercontext->id,

message/classes/output/preferences/notification_list_processor.php

@@ -116,6 +116,7 @@ class notification_list_processor implements templatable, renderable {
         $defaultpreference = $processor->name.'_provider_'.$preferencebase.'_permitted';
         $context = [
             'displayname' => get_string('pluginname', 'message_'.$processor->name),
+            'ispopup' => ($processor->name == 'popup'),
             'name' => $processor->name,
             'locked' => false,
             'userconfigured' => $processor->object->is_user_configured(),