http2: fix sequence of error/close events

Correct sequence of emitting `error` and `close` events for a
`Http2Stream`.

PR-URL: #24789
Refs: #22850
Refs: #24685
Fixes: #24559
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

lib/internal/http2/core.js

@@ -1997,9 +1997,8 @@ class Http2Stream extends Duplex {
     // will destroy if it has been closed and there are no other open or
     // pending streams.
     session[kMaybeDestroy]();
-    process.nextTick(emit, this, 'close', code);
     callback(err);
-
+    process.nextTick(emit, this, 'close', code);
   }
   // The Http2Stream can be destroyed if it has closed and if the readable
   // side has received the final chunk.

test/parallel/test-http2-stream-destroy-event-order.js

@@ -1,4 +1,3 @@
-// Flags: --expose-http2
 'use strict';
 
 const common = require('../common');
@@ -10,8 +9,8 @@ let client;
 let req;
 const server = http2.createServer();
 server.on('stream', common.mustCall((stream) => {
-  stream.on('close', common.mustCall(() => {
-    stream.on('error', common.mustCall(() => {
+  stream.on('error', common.mustCall(() => {
+    stream.on('close', common.mustCall(() => {
       server.close();
     }));
   }));
@@ -22,8 +21,8 @@ server.listen(0, common.mustCall(() => {
   client = http2.connect(`http://localhost:${server.address().port}`);
   req = client.request();
   req.resume();
-  req.on('close', common.mustCall(() => {
-    req.on('error', common.mustCall(() => {
+  req.on('error', common.mustCall(() => {
+    req.on('close', common.mustCall(() => {
       client.close();
     }));
   }));