lib: use process.nextTick() instead of setImmediate()

Do not delay the call to `stream.end()` too much.

PR-URL: nodejs#42340
Refs: nodejs#42340 (comment)
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Juan José Arboleda <[email protected]>
Reviewed-By: Yagiz Nizipli <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>
Reviewed-By: Antoine du Hamel <[email protected]>

lib/internal/js_stream_socket.js

@@ -141,7 +141,7 @@ class JSStreamSocket extends Socket {
 
     const handle = this._handle;
 
-    setImmediate(() => {
+    process.nextTick(() => {
       // Ensure that write is dispatched asynchronously.
       this.stream.end(() => {
         this.finishShutdown(handle, 0);