### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When folder names contain a space then `listObjects` returns names without `/` at the end. Without space it works fine.

### Expected Behavior

Folders containing space in the name are returned with `/` at the end.

### How are you starting LocalStack?

With a `docker run` command

### Steps To Reproduce

awslocal s3api put-object --bucket bucket-name --key "folder name/"

awslocal s3api list-objects --bucket bucket-name
```
{
    "Contents": [
        {
            "Key": "folder name",
            "LastModified": "2023-12-11T10:15:20.000Z",
            "ETag": "\"d41d8cd98f00b204e9800998ecf8427e\"",
            "Size": 0,
            "StorageClass": "STANDARD",
            "Owner": {
                "DisplayName": "webfile",
                "ID": "75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a"
            }
        }
    ],
    "RequestCharged": null
}
```


### Environment

```markdown
- OS: Linux Mint 21.2
- LocalStack: localstack/localstack:3.0
```


### Anything else?

_No response_
with pytest.raises(ClientError) as e:
            aws_client.s3.complete_multipart_upload(
                Bucket=s3_bucket,
                Key=key_name,
                MultipartUpload={"Parts": multipart_upload_parts_no_checksum},
                UploadId=upload_id,
            )
        snapshot.match("complete-multipart-without-checksum", e.value.response)
        response = aws_client.s3.complete_multipart_upload(
            Bucket=s3_bucket,
            Key=key_name,
            MultipartUpload={"Parts": multipart_upload_parts},
            UploadId=upload_id,
        )
        snapshot.match("complete-multipart-checksum", response)
        get__with_checksum = aws_client.s3.get_(
            Bucket=s3_bucket, Key=key_name, ChecksumMode="ENABLED"
        )
        # empt
        get__with_checksum["Body"].read()
        snapshot.match("get--with-checksum", get__with_checksum)
        _attrs = aws_client.s3.get__attributes(
            Bucket=s3_bucket,
            Key=key_name,
            Attributes=["Checksum"],
        )
        snapshot.match("get--attrs", _attrs)
    @markers.aws.validated
    @pytest.mark.xfail(reason="Behaviour not implemented yet")
    def test_multipart_parts_checksum_exceptions(self, s3_bucket, snapshot, aws_client):