HOLI-9682 set destroy job to allow_failure so pipeline completes

.gitlab-ci.yml

@@ -135,7 +135,7 @@ review_destroy:
     - terraform/environments/scripts/destroy-env.sh $CI_ENVIRONMENT_SLUG
   # can't use rules here: https://gitlab.com/gitlab-org/gitlab/-/issues/34077
   when: manual
-  allow_failure: false
+  allow_failure: true
   except:
     - main
     - production