Remove use of REQUEST_TIME in revisioning functionality

src/Form/EventInstanceForm.php

@@ -96,7 +96,7 @@ class EventInstanceForm extends ContentEntityForm {
       $entity->setNewRevision();
 
       // If a new revision is created, save the current user as revision author.
-      $entity->setRevisionCreationTime(REQUEST_TIME);
+      $entity->setRevisionCreationTime(\Drupal::time()->getRequestTime());
       $entity->setRevisionUserId(\Drupal::currentUser()->id());
     }
     else {

src/Form/EventInstanceRevisionRevertForm.php

@@ -155,7 +155,7 @@ class EventInstanceRevisionRevertForm extends ConfirmFormBase {
   protected function prepareRevertedRevision(EventInterface $revision, FormStateInterface $form_state) {
     $revision->setNewRevision();
     $revision->isDefaultRevision(TRUE);
-    $revision->setRevisionCreationTime(REQUEST_TIME);
+    $revision->setRevisionCreationTime(\Drupal::time()->getRequestTime());
 
     return $revision;
   }

src/Form/EventInstanceRevisionRevertTranslationForm.php

@@ -106,7 +106,7 @@ class EventInstanceRevisionRevertTranslationForm extends EventInstanceRevisionRe
 
     $latest_revision_translation->setNewRevision();
     $latest_revision_translation->isDefaultRevision(TRUE);
-    $revision->setRevisionCreationTime(REQUEST_TIME);
+    $revision->setRevisionCreationTime(\Drupal::time()->getRequestTime());
 
     return $latest_revision_translation;
   }

src/Form/EventSeriesForm.php

@@ -289,7 +289,7 @@ class EventSeriesForm extends ContentEntityForm {
       $entity->setNewRevision();
 
       // If a new revision is created, save the current user as revision author.
-      $entity->setRevisionCreationTime(REQUEST_TIME);
+      $entity->setRevisionCreationTime(\Drupal::time()->getRequestTime());
       $entity->setRevisionUserId(\Drupal::currentUser()->id());
     }
     else {

src/Form/EventSeriesRevisionRevertForm.php

@@ -155,7 +155,7 @@ class EventSeriesRevisionRevertForm extends ConfirmFormBase {
   protected function prepareRevertedRevision(EventInterface $revision, FormStateInterface $form_state) {
     $revision->setNewRevision();
     $revision->isDefaultRevision(TRUE);
-    $revision->setRevisionCreationTime(REQUEST_TIME);
+    $revision->setRevisionCreationTime(\Drupal::time()->getRequestTime());
 
     return $revision;
   }

src/Form/EventSeriesRevisionRevertTranslationForm.php

@@ -106,7 +106,7 @@ class EventSeriesRevisionRevertTranslationForm extends EventSeriesRevisionRevert
 
     $latest_revision_translation->setNewRevision();
     $latest_revision_translation->isDefaultRevision(TRUE);
-    $revision->setRevisionCreationTime(REQUEST_TIME);
+    $revision->setRevisionCreationTime(\Drupal::time()->getRequestTime());
 
     return $latest_revision_translation;
   }