Add basic coverage for some worker jobs (#23943)

spec/workers/redownload_avatar_worker_spec.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe RedownloadAvatarWorker do
+  let(:worker) { described_class.new }
+
+  describe 'perform' do
+    it 'runs without error for missing record' do
+      expect { worker.perform(nil) }.to_not raise_error
+    end
+  end
+end