Rake gitlab:cleanup:orphan_lfs_files clears the cache with project

It used to just clear LFS files but the project size should
 be recalculated. So we spawn the worker that will clear the cache

changelogs/unreleased/fix-36628-create-a-rake-task-to-cleanup-unused-lfs-files.yml

+---
+title: Rake task gitlab:cleanup:orphan_lfs_files should clear the cached value or repository size
+merge_request: 32541
+author:
+type: fixed

ee/spec/lib/ee/gitlab/cleanup/orphan_lfs_file_references_spec.rb

@@ -34,6 +34,7 @@ describe Gitlab::Cleanup::OrphanLfsFileReferences do
     it 'prints messages and deletes invalid reference' do
       expect(null_logger).to receive(:info).with("Looking for orphan LFS files for project #{project.name_with_namespace}")
       expect(null_logger).to receive(:info).with("Removed invalid references: 1")
+      expect(ProjectCacheWorker).to receive(:perform_async).with(project.id, [], [:lfs_objects_size])
 
       expect { described_class.new(project, logger: null_logger, dry_run: false).run! }
         .to change { project.lfs_objects.count }.from(2).to(1)

lib/gitlab/cleanup/orphan_lfs_file_references.rb

@@ -35,6 +35,8 @@ module Gitlab
             count += relation.delete_all
           end
 
+          ProjectCacheWorker.perform_async(project.id, [], [:lfs_objects_size])
+
           log_info("Removed invalid references: #{count}")
         end
       end