[experiment-only] Add sampling of txns to comparison testing tool #73967

Job	Run time
file_change_determinator	10s
rust-doc-tests	0s
rust-unit-tests	0s
rust-consensus-only-unit-test	0s
rust-consensus-only-smoke-test	0s
rust-cargo-deny	1m 41s
rust-lints	1m 30s
general-lints	30s
rust-check-merge-base	1m 33s
rust-cryptohasher-domain-separation-check	0s
rust-smoke-tests	0s
rust-targeted-unit-tests	14m 29s
rust-build-cached-packages	0s
	19m 53s

Provide feedback