Only log for passenger / vehicle world mismatch

Exception thrown may corrupt passenger/vehicle state

patches/server/Ensure-entity-passenger-world-matches-ridden-entity.patch

@@ -15,7 +15,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      protected boolean addPassenger(Entity entity) { // CraftBukkit
 +        // Paper start
 +        if (entity.level != this.level) {
-+            throw new IllegalArgumentException("Entity passenger world must match");
++            LOGGER.error("Entity passenger world must match, cannot add " + entity + " as passenger to " + this, new Throwable());
++            return false;
 +        }
 +        // Paper end
          if (entity == this) throw new IllegalArgumentException("Entities cannot become a passenger of themselves"); // Paper - issue 572