Replace use of the Dummy Handshake Layer with the real one

Replace use of the Dummy Handshake Layer with the real one

We start using the QUIC TLS implementation rather than the dummy one.

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19748)