Add more context to log message

Author: acogoluegnes

src/main/java/com/rabbitmq/stream/impl/ConsumersCoordinator.java

@@ -886,7 +886,7 @@ private void recoverSubscription(List<Broker> candidates, SubscriptionTracker tr
                   () -> findBrokersForStream(tracker.stream),
                   ex -> !(ex instanceof StreamDoesNotExistException),
                   environment.recoveryBackOffDelayPolicy(),
-                  "Candidate lookup to consume from '%s'",
+                  "Candidate lookup to consume from '%s' (subscription recovery)",
                   tracker.stream);
         } catch (Exception e) {
           LOGGER.warn("Error while re-assigning subscription from stream {}", tracker.stream, e);