Move "unknown entity definition" spam to debug level (#4270)

core/src/main/java/org/geysermc/geyser/translator/protocol/java/entity/spawn/JavaAddEntityTranslator.java

@@ -49,7 +49,7 @@ public class JavaAddEntityTranslator extends PacketTranslator<ClientboundAddEnti
     public void translate(GeyserSession session, ClientboundAddEntityPacket packet) {
         EntityDefinition<?> definition = Registries.ENTITY_DEFINITIONS.get(packet.getType());
         if (definition == null) {
-            session.getGeyser().getLogger().warning("Could not find an entity definition with type " + packet.getType());
+            session.getGeyser().getLogger().debug("Could not find an entity definition with type " + packet.getType());
             return;
         }