### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When reading a file of a bucket with the Java AWS SDK the content-length is not set in the GetObjectResponse.

![image](https://github.com/localstack/localstack/assets/90579580/4c89a103-b064-4061-a91e-2012b19b838f)

![image](https://github.com/localstack/localstack/assets/90579580/8f52adf0-1205-4d6f-8fd0-6d026cac6db6)


### Expected Behavior

The content-length is included in the response

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

This is the content of my docker-compose file:
`  s3:
    container_name: "s3test"
    image: "localstack/localstack:2.2.0"
    ports:
      - "4566:4566"
    volumes:
      - ./src/test/local/s3/data:/var/lib/localstack/s3
      - ./src/test/local/s3/init-s3.sh:/etc/localstack/init/ready.d/init-s3.sh`

In the init script I create a bucket and put some file to it:
`awslocal s3api create-bucket --bucket test-bucket
aws s3api put-object --body /var/lib/localstack/s3/test.png --bucket test-bucket --key storage/test.png --content-type image/png --endpoint-url http://localhost:4566`

Then I query the file using the getObject Method of the S3Client of the Java AWS SDK


### Environment

```markdown
- OS: Windows 10
- LocalStack:2.2.0
```


### Anything else?

This behavior starts with version 2.2.0. Using version 2.1.0 everything works as expected
if part_number < parts and ((len_data := len(part_data)) < 5_242_880):
                
                multiple = 5_242_880 // len_data
                part_data = part_data * (multiple + 1)
            part_data = to_bytes(part_data)
            upload_file_ = BytesIO(part_data)
            if zipped:
                upload_file_ = BytesIO()
                with gzip.GzipFile(fileobj=upload_file_, mode="w") as filestream:
                    filestream.write(part_data)
            response = aws_client.s3.upload_part(
                Bucket=bucket,
                Key=key,
                Body=upload_file_,
                PartNumber=part_number,
                UploadId=upload_id,
            )
            multipart_upload_parts.append({"ETag": response["ETag"], "PartNumber": part_number})
            
            if zipped:
                break
        return aws_client.s3.complete_multipart_upload(
            Bucket=bucket,
            Key=key,
            MultipartUpload={"Parts": multipart_upload_parts},
            UploadId=upload_id,
        )
    return perform_multipart_upload
@pytest.fixture
def s3_multipart_upload_with_snapshot(aws_client, snapshot):