Suppress backtrace when failed to communicate with a remote instance (#5076)

app/workers/activitypub/delivery_worker.rb

@@ -16,7 +16,7 @@ class ActivityPub::DeliveryWorker
 
     raise Mastodon::UnexpectedResponseError, @response unless response_successful?
   rescue => e
-    raise e.class, "Delivery failed for #{inbox_url}: #{e.message}"
+    raise e.class, "Delivery failed for #{inbox_url}: #{e.message}", e.backtrace[0]
   end
 
   private

app/workers/pubsubhubbub/delivery_worker.rb

@@ -17,7 +17,7 @@ class Pubsubhubbub::DeliveryWorker
     @payload = payload
     process_delivery unless blocked_domain?
   rescue => e
-    raise e.class, "Delivery failed for #{subscription&.callback_url}: #{e.message}"
+    raise e.class, "Delivery failed for #{subscription&.callback_url}: #{e.message}", e.backtrace[0]
   end
 
   private

app/workers/pubsubhubbub/subscribe_worker.rb

@@ -29,6 +29,6 @@ class Pubsubhubbub::SubscribeWorker
     logger.debug "PuSH re-subscribing to #{account.acct}"
     ::SubscribeService.new.call(account)
   rescue => e
-    raise e.class, "Subscribe failed for #{account&.acct}: #{e.message}"
+    raise e.class, "Subscribe failed for #{account&.acct}: #{e.message}", e.backtrace[0]
   end
 end