Do not close response for InputStreamResource

[quaff]

Closing underlying stream should be responsibility of InputStreamResource

ResponseEntity<InputStreamResource> entity = restTemplate.getForEntity(url, InputStreamResource.class);
try (InputStream is = response.getBody().getInputStream()) {
	// do something
}

"java.io.IOException: closed" is fixed after this commit

[bclozel]

RestTemplate is closing the response by design.
See #21424 and #19448 (comment) for more background about this. I'm declining this PR as a result.

Thanks!