http2: centralise socket event binding in Http2Session

Move the socket event binding to the
HTTP2Session constructor so that an error
event could be delivered should the
constructor fail

Ref: https://github.com/nodejs/node/pull/35772

PR-URL: https://github.com/nodejs/node/pull/35772
Fixes: https://github.com/nodejs/node/issues/35695


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ricky Zhou <0x19951125@gmail.com>