Refactor workflow delegator in transaction generator #69154

Job	Run time
file_change_determinator	11s
rust-doc-tests	5m 4s
rust-consensus-only-unit-test	0s
rust-unit-tests	0s
rust-consensus-only-smoke-test	0s
rust-cargo-deny	2m 1s
rust-lints	3m 33s
general-lints	31s
rust-cryptohasher-domain-separation-check	0s
rust-smoke-tests	26m 18s
rust-build-cached-packages	2m 7s
rust-check-merge-base	3m 0s
rust-targeted-unit-tests	11m 15s
	54m 0s

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