BUG/MINOR: ssl/quic: fix 0RTT define

BUG/MINOR: ssl/quic: fix 0RTT define

Previous patches have reorganize define definitions for SSL 0RTT
support. However a typo was introduced. This caused haproxy to disable
0RTT support announcement and report of an erroneous warning for no
support on the SSL library side when using quictls/openssl compat layer.

This was detected by using ngtcp2-client. No 0RTT packet were emitted by
the client due to haproxy missing support advertisement.

The faulty commit is the following one :
  commit 5c4519934708bfe6a26b9ad0cc93a8c5c87df112
  MEDIUM: ssl/quic: always compile the ssl_conf.early_data test

This must be backported wherever the above patch is.