Add delivery failure handling to FASP jobs (#35723)

app/workers/fasp/base_worker.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class Fasp::BaseWorker
+  include Sidekiq::Worker
+
+  sidekiq_options queue: 'fasp'
+
+  private
+
+  def with_provider(provider)
+    return unless provider.available?
+
+    yield
+  rescue *Mastodon::HTTP_CONNECTION_ERRORS
+    raise if provider.available?
+  ensure
+    provider.update_availability!
+  end
+end