Fix NPE in ServerEntityAnimationPacket (#1942)

Closes: https://github.com/bundabrg/GeyserReversion/issues/41

Co-authored-by: bundabrg <bundabrg@grieve.com.au>

connector/src/main/java/org/geysermc/connector/network/translators/java/entity/JavaEntityAnimationTranslator.java

@@ -60,6 +60,9 @@ public class JavaEntityAnimationTranslator extends PacketTranslator<ServerEntity
             case LEAVE_BED:
                 animatePacket.setAction(AnimatePacket.Action.WAKE_UP);
                 break;
+            default:
+                // Unknown Animation
+                return;
         }
 
         session.sendUpstreamPacket(animatePacket);