http2: rename event variant to match rule #4725

Job	Run time
Prepare dependencies	30s
Prepare cbindgen	15s
AlmaLinux 9 (no jansson)	7m 30s
Debian 12	24m 15s
MacOS Latest	8m 18s
Ubuntu 24.04 (cocci)	22m 13s
Debian 12 Dist Builder	5m 30s
Windows MSYS2 MINGW64 (NPcap)	25m 22s
Windows MSYS2 MINGW64 (libpcap)	25m 17s
Windows MSYS2 MINGW64 (WinDivert)	11m 54s
AlmaLinux 9 Test Templates	9m 8s
AlmaLinux 9	12m 6s
AlmaLinux 8	5m 11s
Fedora 39 (gcc, debug, asan, wshadow, rust-strict)	8m 8s
Fedora 39 (clang, debug, asan, wshadow, rust-strict, systemd)	13m 3s
Fedora 39 (Suricata Verify codecov)	9m 21s
Fedora 40 (clang, debug, asan, wshadow, rust-strict, systemd)	7m 45s
Fedora 40 (gcc, debug, asan, wshadow, rust-strict)	7m 52s
Fedora 40 (non-root, debug, clang, asan, wshadow, rust-strict)	6m 35s
Debian 10	7m 34s
Debian 11 (xdp)	7m 30s
Debian 12 MSRV	24m 27s
AlmaLinux 9 (Minimal/Recommended Build)	4m 3s
Ubuntu 20.04 (-DNDEBUG)	9m 22s
Ubuntu 22.04 (unittests coverage)	7m 58s
Ubuntu 22.04 (fuzz corpus coverage)	22m 57s
Ubuntu 22.04 (Debug Validation)	9m 49s
Ubuntu 22.04 (DPDK Build) (22.11.3)	14m 45s
Ubuntu 22.04 (Fuzz)	6m 0s
Ubuntu 22.04 (Minimal/Recommended Build)	2m 42s
Ubuntu 22.04 (DPDK Build) (21.11.5)	11m 57s
Ubuntu 22.04 (Netmap build)	3m 40s
Ubuntu 22.04 (DPDK Build) (20.11.9)	9m 57s
Ubuntu 22.04 (DPDK Build) (19.11.14)	9m 20s
CentOS Stream 9	7m 59s
Ubuntu 20.04 (unsupported rust)	1m 12s
	6h 11m 25s

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