Add name property to Step

[MAILPOET-4445]

mailpoet/lib/Automation/Integrations/MailPoet/Templates/WorkflowBuilder.php

@@ -78,6 +78,7 @@ class WorkflowBuilder {
   private function delayStep(?int $delay, string $delayType): Step {
     return new Step(
       $this->uniqueId(),
+      null,
       Step::TYPE_ACTION,
       $this->delayAction->getKey(),
       null,
@@ -91,6 +92,7 @@ class WorkflowBuilder {
   private function segmentSubscribedTriggerStep(?int $segmentId = null): Step {
     return new Step(
       $this->uniqueId(),
+      null,
       Step::TYPE_TRIGGER,
       $this->segmentSubscribedTrigger->getKey(),
       null,
@@ -103,6 +105,7 @@ class WorkflowBuilder {
   private function sendEmailActionStep(): Step {
     return new Step(
       $this->uniqueId(),
+      __('Send email', 'mailpoet'),
       Step::TYPE_ACTION,
       $this->sendEmailAction->getKey(),
       null,