[Bug] - REST ListObject V1 - NextMarker erroneously shown without delimiter param

[lrm25]

Describe the bug
For REST ListObjects, the NextMarker param should only be used if the delimiter is set. It's appearing despite not being set.

<?xml version="1.0" encoding="UTF-8"?>
   <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Name>versity-gwtest-bucket-one-1</Name><NextMarker>test_file</NextMarker><MaxKeys>1</MaxKeys><IsTruncated>true</IsTruncated><Contents><LastModified>2024-12-23T18:07:52.408Z</LastModified><ETag>2013e39a400cd12164dc5fe319682b72</ETag><Key>test_file</Key><Size>10</Size><StorageClass>STANDARD</StorageClass></Contents><EncodingType></EncodingType></ListBucketResult>
   2024-12-23 15:07:53 DEBUG next marker: <NextMarker>test_file</NextMarker>

To Reproduce

1. Start versitygw, e.g.: ./versitygw --access=******** --secret=******** --region=us-east-1 --iam-dir=/Users/lukemccrone/devel/versitygw/iam --cert /Users/lukemccrone/devel/versitygw/cert.pem --key /Users/lukemccrone/devel/versitygw/versitygw.pem posix --versioning-dir /tmp/versioning /tmp/gw
2. Create a bucket, e.g.: aws --no-verify-ssl s3api create-bucket --bucket versity-gwtest-bucket-one-1
3. Create two local objects, and place in the s3 bucket, e.g.: aws --no-verify-ssl s3api put-object --body /Users/lukemccrone/devel/versitygw/versity-gwtest-files/test_file --bucket versity-gwtest-bucket-one-1 --key test_file
4. Send a list-objects command with the max-keys parameter set to 1 and no delimiter, e.g.: curl -ks -w %{http_code} https://localhost:7070/versity-gwtest-bucket-one-1?max-keys=1 -H Authorization: AWS4-HMAC-SHA256 Credential=********/20241223/us-east-1/s3/aws4_request,SignedHeaders=host;x-amz-content-sha256;x-amz-date,Signature=7942ff240c58c0af5758511b67a6d186eb1468fb49cf81bc29c88689f35306a5 -H x-amz-content-sha256: UNSIGNED-PAYLOAD -H x-amz-date: 20241223T180835Z -o /Users/lukemccrone/devel/versitygw/versity-gwtest-files/objects.txt

Expected behavior
The NextMarker parameter doesn't show up.

Server Version
Version : v1.0.9
Build : c0b6183
BuildTime: 2024-12-20_07:07:55PM
Darwin Lukes-MacBook-Pro.local 23.4.0 Darwin Kernel Version 23.4.0: Fri Mar 15 00:12:25 PDT 2024; root:xnu-10063.101.17~1/RELEASE_ARM64_T6030 arm64