Stability issue likely linked to zombie shards

Uncaught error may have been causing zombie shards and causing the stability issues. This should fix it hopefully.

Other issues related to the rewrite are being investigated

client/src/main/java/org/dreamexposure/discal/client/listeners/discord/MessageCreateListener.java

@@ -85,6 +85,7 @@ public class MessageCreateListener {
                 .log(LogObject.forException("Error Handling message event",
                     event.getMessage().getContent(), e, MessageCreateListener.class)
                 )
-            ).then();
+            ).onErrorResume(e -> Mono.empty())
+            .then();
     }
 }