When moving issues, don't attempt to move files in object storage

Closes #48505

changelogs/unreleased/sh-fix-move-issue-with-object-storage.yml

+---
+title: When moving issues, don't attempt to move files in object storage
+merge_request:
+author:
+type: fixed

lib/gitlab/gfm/uploads_rewriter.rb

@@ -48,7 +48,7 @@ module Gitlab
       def find_file(project, secret, file)
         uploader = FileUploader.new(project, secret: secret)
         uploader.retrieve_from_store!(file)
-        uploader.file
+        uploader.file if uploader.object_store == ObjectStorage::Store::LOCAL
       end
 
       # Because the uploaders use 'move_to_store' we must have a temporary

spec/lib/gitlab/gfm/uploads_rewriter_spec.rb

@@ -62,5 +62,24 @@ describe Gitlab::Gfm::UploadsRewriter do
       subject { rewriter.files }
       it { is_expected.to be_an(Array) }
     end
+
+    describe 'with object storage' do
+      before do
+        stub_uploads_object_storage(uploader: FileUploader)
+        zip_uploader.migrate!(FileUploader::Store::REMOTE)
+      end
+
+      describe '#needs_rewrite?' do
+        subject { rewriter.needs_rewrite? }
+
+        it { is_expected.to eq false }
+      end
+
+      describe '#files' do
+        subject { rewriter.files }
+
+        it { is_expected.to eq([]) }
+      end
+    end
   end
 end