Split fuzz runners by hash mode #22976

Job	Run time
ext-test	7m 36s
check_release	2m 54s
check_docs	8m 15s
rustfmt	13s
benchmark	17m 48s
fuzz	1h 10m 17s
build-features / build (self-hosted, 1.75.0)	34m 16s
tor-connect	7m 34s
linting	2m 25s
build-cfg-flags / build (self-hosted, 1.75.0)	16m 12s
build-workspace / build (self-hosted, 1.75.0)	17m 2s
build-nostd / build (self-hosted, 1.75.0)	21m 6s
build-bindings / build (self-hosted, 1.75.0)	21m 28s
fuzz_sanity	17m 46s
build-sync / build (self-hosted, 1.75.0)	21m 49s
coverage	1s
notify-failure	1s
	4h 26m 43s

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