trivial: move a few data structures off executor-types #67386

Job	Run time
file_change_determinator	11s
rust-doc-tests	4m 45s
rust-unit-tests	0s
rust-consensus-only-smoke-test	0s
rust-consensus-only-unit-test	0s
rust-cargo-deny	1m 41s
general-lints	30s
rust-smoke-tests	16m 23s
rust-lints	3m 37s
rust-build-cached-packages	2m 8s
rust-check-merge-base	2m 44s
rust-cryptohasher-domain-separation-check	0s
rust-targeted-unit-tests	9m 20s
	41m 19s

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