Fix project statistics Uploads

Changelog: fixed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/71370

app/models/upload.rb

@@ -18,6 +18,8 @@ class Upload < ApplicationRecord
   before_save  :calculate_checksum!, if: :foreground_checksummable?
   after_commit :schedule_checksum,   if: :needs_checksum?
 
+  after_commit :update_project_statistics, on: [:create, :destroy], if: :project?
+
   # as the FileUploader is not mounted, the default CarrierWave ActiveRecord
   # hooks are not executed and the file will not be deleted
   after_destroy :delete_file!, if: -> { uploader_class <= FileUploader }
@@ -161,6 +163,14 @@ class Upload < ApplicationRecord
   def mount_point
     super&.to_sym
   end
+
+  def project?
+    model_type == "Project"
+  end
+
+  def update_project_statistics
+    ProjectCacheWorker.perform_async(model_id, [], [:uploads_size])
+  end
 end
 
 Upload.prepend_mod_with('Upload')