MongoObservationCommandListener OutOfMemory

Hi,

When we iterating over a collection with a large number of documents (> 1 mio) our pod ran out of Memory.
Even, when we just used the MongoCurser without any other actions this happens.

void republishFromDatabase(Consumer<StoreVehicleOperations> onNext, boolean changeStream, boolean stateStore) {
   try (var cursor = mongoTemplate.getCollection(Vehicle.COLLECTION_NAME)
        .withReadPreference(ReadPreference.secondaryPreferred())
        .find()
        .batchSize(batchSize)
        .cursor()) {
        while (cursor.hasNext()) {
            var document = cursor.next();
        }
    }
}

With this configuration:

@Bean        
public MongoClientSettingsBuilderCustomizer mongoCustomizer()  {
        return builder -> {
            builder
                    .contextProvider(ContextProviderFactory.create(observationRegistry))
                    .uuidRepresentation(UuidRepresentation.JAVA_LEGACY)
                    .retryWrites(false)
                    .addCommandListener(new MongoObservationCommandListener(observationRegistry));

        };
    }

I found out hat this happens duo the usage of the MongoObservationCommandListener.
Since this listener will add a getMore observation for each getMore and will link them:

getMore
  getMore
    getMore
      ...

After I removed
.addCommandListener(new MongoObservationCommandListener(observationRegistry))
from my MongoClientSettingsBuilderCustomizer, it works fine.

This configuration works:

           return builder -> {  builder
                    .uuidRepresentation(UuidRepresentation.JAVA_LEGACY)
                    .retryWrites(false);
                    };

I tried this with:
spring-boot-starter-mongodb-reactive with 3.1.0
spring-boot-starter-mongodb with 3.1.0