fix(s2n-quic-core): remove unwraps in null TLS provider (#1881) #3462

Job	Run time
env	5s
quinn	2m 59s
s2n-quic-qns (debug)	4m 40s
s2n-quic-qns (release)	9m 42s
perf (quinn, s2n-quic)	3m 6s
perf (s2n-quic, s2n-quic)	2m 9s
perf (s2n-quic-null, s2n-quic-null)	1m 58s
bench	13m 6s
h3spec (s2n-tls)	5s
h3spec (rustls)	13s
interop (aioquic, s2n-quic)	17m 33s
interop (chrome, s2n-quic)	4m 48s
interop (kwik, s2n-quic)	13m 55s
interop (lsquic, s2n-quic)	15m 38s
interop (msquic, s2n-quic)	18m 50s
interop (mvfst, s2n-quic)	10m 32s
interop (neqo, s2n-quic)	14m 37s
interop (ngtcp2, s2n-quic)	14m 8s
interop (picoquic, s2n-quic)	14m 6s
interop (quic-go, s2n-quic)	11m 46s
interop (quiche, s2n-quic)	18m 16s
interop (quinn, s2n-quic)	16m 47s
interop (s2n-quic, aioquic)	14m 45s
interop (s2n-quic, haproxy)	11m 42s
interop (s2n-quic, kwik)	11m 15s
interop (s2n-quic, lsquic)	10m 32s
interop (s2n-quic, msquic)	7m 3s
interop (s2n-quic, mvfst)	5m 4s
interop (s2n-quic, neqo)	12m 51s
interop (s2n-quic, nginx)	10m 17s
interop (s2n-quic, ngtcp2)	12m 8s
interop (s2n-quic, picoquic)	11m 21s
interop (s2n-quic, quic-go)	9m 36s
interop (s2n-quic, quiche)	9m 32s
interop (s2n-quic, quinn)	9m 54s
interop (s2n-quic, s2n-quic)	13m 17s
interop (s2n-quic, s2n-quic-rustls)	12m 7s
interop (s2n-quic, xquic)	4m 27s
interop (s2n-quic-rustls, s2n-quic)	13m 21s
interop (xquic, s2n-quic)	8m 50s
attack (udp)	6m 50s
perf-report	18s
interop-report	24s
	6h 44m 33s

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