http2: reinject data received before http2 is attached

Reinject the data already received from the TLS
socket when the HTTP2 client is attached with a
delay

Fixes: https://github.com/nodejs/node/issues/35475

PR-URL: https://github.com/nodejs/node/pull/35678


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Alba Mendez <me@alba.sh>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Ricky Zhou <0x19951125@gmail.com>