Select proper ORIG_DCID when sending server hello over quic

Select proper ORIG_DCID when sending server hello over quic

When establishing a connection over quic, if the channel is established
in response to a retry request from the server, the ORIG_DCID transport
parameter must reflect the original dcid sent from the client in the
first inital packet that the server sent the retry request in response
to.

As opposed to establishing a connection without the retry request, when
address validation isn't in use, where the ORIG_DCID parameter just
represents the the dcid that the client sent.

Augment the channel creation code to select the 'right' DCID when
encoding server side transport parameters

Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25890)