tls: do not break custom fields when enabling JA4 #1491

Job	Run time
Prepare cbindgen	10s
Prepare dependencies	40s
AlmaLinux 8	5m 24s
AlmaLinux 9 (no jansson)	1m 23s
AlmaLinux 9 (Minimal/Recommended Build)	3m 53s
AlmaLinux 9	12m 33s
AlmaLinux 9 Test Templates	5m 1s
Debian 10	7m 24s
Debian 11 (xdp)	7m 16s
Debian 12	22m 17s
Debian 12 Dist Builder	7m 10s
Debian 12 MSRV	22m 47s
Fedora 38 (clang, debug, asan, wshadow, rust-strict, systemd)	1h 1m 18s
Fedora 38 (gcc, debug, asan, wshadow, rust-strict)	8m 6s
Fedora 38 (Suricata Verify codecov)	13m 13s
Fedora 39 (clang, debug, asan, wshadow, rust-strict, systemd)	8m 6s
Fedora 39 (gcc, debug, asan, wshadow, rust-strict)	8m 40s
Fedora 39 (non-root, debug, clang, asan, wshadow, rust-strict, systemd)	7m 35s
MacOS Latest	11m 17s
Ubuntu 20.04 (-DNDEBUG)	9m 49s
Ubuntu 22.04 (fuzz corpus coverage)	16m 6s
Ubuntu 22.04 (unittests coverage)	6m 20s
Ubuntu 22.04 (Debug Validation)	9m 8s
Ubuntu 22.04 (DPDK Build) (22.11.3)	14m 19s
Ubuntu 22.04 (Fuzz)	6m 18s
Ubuntu 22.04 (DPDK Build) (21.11.5)	11m 21s
Ubuntu 22.04 (DPDK Build) (20.11.9)	11m 10s
Ubuntu 22.04 (DPDK Build) (19.11.14)	8m 55s
Ubuntu 22.04 (Minimal/Recommended Build)	2m 59s
Ubuntu 22.04 (Netmap build)	3m 29s
Windows MSYS2 MINGW64 (libpcap)	26m 8s
Windows MSYS2 MINGW64 (NPcap)	25m 35s
Windows MSYS2 MINGW64 (WinDivert)	12m 30s
CentOS Stream 9	5m 42s
Ubuntu 20.04 (unsupported rust)	1m 45s
	6h 25m 47s

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