added changelog, small refactor

changelogs/unreleased/48745-project-exports-fail-when-uploads-have-been-migrated-to-object-storage.yml

+---
+title: Add uploader support to Import/Export uploads
+merge_request: 20484
+author:
+type: added

lib/gitlab/import_export/uploads_manager.rb

@@ -47,11 +47,10 @@ module Gitlab
 
       def copy_from_object_storage
         return unless Gitlab::ImportExport.object_storage?
-        return if uploads.empty?
 
         uploads.each do |upload_model|
           next unless upload_model.file
-          next if upload_model.upload.local? # Already copied
+          next if upload_model.upload.local? # Already copied, using  the old  method
 
           download_and_copy(upload_model)
         end

spec/lib/gitlab/import_export/avatar_saver_spec.rb

@@ -19,8 +19,6 @@ describe Gitlab::ImportExport::AvatarSaver do
   it 'saves a project avatar' do
     described_class.new(project: project_with_avatar, shared: shared).save
 
-    puts "#{shared.export_path}/avatar/dk.png"
-
     expect(File).to exist("#{shared.export_path}/avatar/dk.png")
   end
 

spec/lib/gitlab/import_export/uploads_manager_spec.rb

@@ -34,8 +34,6 @@ describe Gitlab::ImportExport::UploadsManager do
       it 'copies the file in the correct location when there is an upload' do
         manager.save
 
-        puts exported_file_path
-
         expect(File).to exist(exported_file_path)
       end
     end