test: don't fail http2 abort test if 'data' is called multiple times

PR-URL: #21925
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

test/parallel/test-http2-respond-with-file-connection-abort.js

@@ -24,7 +24,7 @@ server.listen(0, common.mustCall(() => {
   const req = client.request();
 
   req.on('response', common.mustCall(() => {}));
-  req.on('data', common.mustCallAtLeast(() => {
+  req.once('data', common.mustCall(() => {
     net.Socket.prototype.destroy.call(client.socket);
     server.close();
   }));