[Bug]: Missing checkpoint when map operation has empty items

[wangyb-A]

Expected Behavior

When a map receives empty items, I expected a operation started and succeeded checkpoint.

Actual Behavior

When a map receives empty items, no checkpoint is done.

Steps to Reproduce

package map;

import java.util.List;
import software.amazon.lambda.durable.DurableContext;
import software.amazon.lambda.durable.DurableHandler;
import software.amazon.lambda.durable.config.MapConfig;
import software.amazon.lambda.durable.model.MapResult;

public class MapEmpty extends DurableHandler<Object, List<String>> {

    @Override
    public List<String> handleRequest(Object input, DurableContext context) {
        MapResult<String> result = context.map(
                "empty", List.<String>of(), String.class, (item, index, ctx) -> item, MapConfig.builder().build());
        return result.results();
    }
}

SDK Version

2.0.0

Java Version

17

Is this a regression?

No

Last Working Version

No response

Additional Context

No response