Fix webfinger retries (#4275)

* Do not raise unretryable exceptions in ResolveRemoteAccountService

* Removed fatal exceptions from ResolveRemoteAccountService

Exceptions that cannot be retried should not be raised. New exception
class for those that can be retried (Mastodon::UnexpectedResponseError)

app/services/process_interaction_service.rb

@@ -47,7 +47,7 @@ class ProcessInteractionService < BaseService
         reflect_unblock!(account, target_account)
       end
     end
-  rescue Goldfinger::Error, HTTP::Error, OStatus2::BadSalmonError, Mastodon::NotPermittedError
+  rescue HTTP::Error, OStatus2::BadSalmonError, Mastodon::NotPermittedError
     nil
   end