fuzz: improve CI iteration strategy, add corpus minimization and summary reporting #22496

Job	Run time
check_docs	3m 14s
check_release	3m 10s
fuzz_sanity	3m 14s
fuzz	3m 14s
linting	2m 25s
benchmark	3m 12s
rustfmt	14s
ext-test	2m 54s
tor-connect	3m 12s
build-features / build (self-hosted, 1.75.0)	3m 13s
build-cfg-flags / build (self-hosted, 1.75.0)	3m 12s
build-nostd / build (self-hosted, 1.75.0)	1s
build-sync / build (self-hosted, 1.75.0)	2m 41s
build-workspace / build (self-hosted, 1.75.0)	52s
build-bindings / build (self-hosted, 1.75.0)	1s
coverage	1s
notify-failure	1s
	34m 51s

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