http2: make compat finished match http/1

finished should true directly after end().

PR-URL: https://github.com/nodejs/node/pull/24347
Refs: https://github.com/nodejs/node/issues/24743


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Ujjwal Sharma <ryzokuken@disroot.org>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>