Revert Gitlab::Utils::StrongMemoize inclusion

This commit reverts the legitimate inclusions.

app/presenters/clusters/cluster_presenter.rb

@@ -2,6 +2,10 @@
 
 module Clusters
   class ClusterPresenter < Gitlab::View::Presenter::Delegated
+    include ::Gitlab::Utils::StrongMemoize
+
+    delegator_override_with ::Gitlab::Utils::StrongMemoize # This module inclusion is expected. See https://gitlab.com/gitlab-org/gitlab/-/issues/352884.
+
     presents ::Clusters::Cluster, as: :cluster
 
     def provider_label

app/presenters/merge_request_presenter.rb

@@ -6,6 +6,9 @@ class MergeRequestPresenter < Gitlab::View::Presenter::Delegated
   include MarkupHelper
   include TreeHelper
   include ChecksCollaboration
+  include Gitlab::Utils::StrongMemoize
+
+  delegator_override_with Gitlab::Utils::StrongMemoize # This module inclusion is expected. See https://gitlab.com/gitlab-org/gitlab/-/issues/352884.
 
   APPROVALS_WIDGET_BASE_TYPE = 'base'