Streams: warning messaging assumes a Response was cloned

[KianNH]

Original issue: #775

It looks like the current warning is always assuming it was a Response object that was cloned when the same message is thrown when Request objects are cloned needlessly.

workerd/src/workerd/api/streams/internal.c++

Lines 291 to 298 in ed4c67d

	if (!wasRead) {
	auto msg =
	"Your worker called response.clone(), but did not read the body of both clones. "
	"This is wasteful, as it forces the system to buffer the entire response body in memory, "
	"rather than streaming it through. This may cause your worker to be unexpectedly "
	"terminated for going over the memory limit. If you only meant to copy the "
	"response headers and metadata (e.g. in order to be able to modify them), "
	"use `new Response(response.body, response)` instead.";

[KianNH]

An issue from Wrangler where a user was confused by the messaging: cloudflare/workers-sdk#3259