stream: preserve mutable chunks in Web Stream adapters

lib/_http_outgoing.js

@@ -904,6 +904,8 @@ OutgoingMessage.prototype.write = function write(chunk, encoding, callback) {
   return ret;
 };
 
+const outgoingMessagePrototypeWrite = OutgoingMessage.prototype.write;
+
 function onError(msg, err, callback) {
   if (msg.destroyed) {
     return;
@@ -1260,4 +1262,5 @@ module.exports = {
   validateHeaderName,
   validateHeaderValue,
   OutgoingMessage,
+  outgoingMessagePrototypeWrite,
 };

lib/internal/streams/utils.js

@@ -345,6 +345,7 @@ module.exports = {
   isWritableEnded,
   isWritableFinished,
   isWritableErrored,
+  isOutgoingMessage,
   isServerRequest,
   isServerResponse,
   willEmitClose,

lib/internal/streams/writable.js

@@ -512,6 +512,8 @@ Writable.prototype.write = function(chunk, encoding, cb) {
   return _write(this, chunk, encoding, cb) === true;
 };
 
+const writablePrototypeWrite = Writable.prototype.write;
+
 Writable.prototype.cork = function() {
   const state = this._writableState;
 
@@ -1150,7 +1152,11 @@ Writable.fromWeb = function(writableStream, options) {
 };
 
 Writable.toWeb = function(streamWritable) {
-  return lazyWebStreams().newWritableStreamFromStreamWritable(streamWritable);
+  return lazyWebStreams().newWritableStreamFromStreamWritable(
+    streamWritable,
+    undefined,
+    writablePrototypeWrite,
+  );
 };
 
 Writable.prototype[SymbolAsyncDispose] = async function() {