### 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_
part_data = to_bytes(part_data)
        parts = 3
        multipart_upload_parts = []
        for part in range(parts):
            
            part_number = part + 1
            upload_file_ = BytesIO(part_data)
            response = aws_client.s3.upload_part(
                Bucket=s3_bucket,
                Key=key_name,
                Body=upload_file_,
                PartNumber=part_number,
                UploadId=upload_id,
                ChecksumAlgorithm="SHA256",
            )
            snapshot.match(f"upload-part-{part}", response)
            multipart_upload_parts.append(
                {
                    "ETag": response["ETag"],
                    "PartNumber": part_number,
                    "ChecksumSHA256": response["ChecksumSHA256"],
                }
            )
        response = aws_client.s3.list_parts(Bucket=s3_bucket, Key=key_name, UploadId=upload_id)
        snapshot.match("list-parts", response)
        # test
        multipart_upload_parts_no_checksum = [
            {"ETag": upload_part["ETag"], "PartNumber": upload_part["PartNumber"]}
            for upload_part in multipart_upload_parts
        ]