[Messenger] added missing information in messenger logs

Author: fabpot

src/Symfony/Component/Messenger/Middleware/LoggingMiddleware.php

@@ -46,7 +46,7 @@ public function handle(Envelope $envelope, StackInterface $stack): Envelope
             $envelope = $stack->next()->handle($envelope, $stack);
         } catch (\Throwable $e) {
             $context['exception'] = $e;
-            $this->logger->warning('An exception occurred while handling message "{class}"', $context);
+            $this->logger->warning('An exception occurred while handling message "{class}": '.$e->getMessage(), $context);
 
             throw $e;
         }

src/Symfony/Component/Messenger/Middleware/SendMessageMiddleware.php

@@ -91,7 +91,7 @@ public function handle(Envelope $envelope, StackInterface $stack): Envelope
             }
         } catch (\Throwable $e) {
             $context['exception'] = $e;
-            $this->logger->warning('An exception occurred while handling message "{class}"', $context);
+            $this->logger->warning('An exception occurred while handling message "{class}": '.$e->getMessage(), $context);
 
             throw $e;
         }