refactor(sat): remove some pointless allocation (#11396) #29787

Job	Run time
Coq 8.16.1	7m 4s
Build microbenchmarks	2m 28s
Create local opam switch (macos-latest, 5)	5m 37s
Build (macos-latest, 5.1.x)	13m 1s
Create local opam switch (macos-latest, 4.14)	5m 21s
Build (ubuntu-latest, 5.1.x)	8m 27s
Create local opam switch (ubuntu-latest, 5)	4m 49s
Documentation	58s
Build (ocaml-variants.5.4.0+trunk, ubuntu-latest, true)	1m 25s
Format	1m 6s
Create local opam switch (ubuntu-latest, 4.14)	4m 59s
Build (4.14.x, ubuntu-latest, true)	1m 33s
Build monorepo benchmark docker image	4m 8s
Nix (macos-latest)	2m 10s
Wasm_of_ocaml	11m 33s
Build (4.14.x, macos-latest, true)	2m 9s
Nix (ubuntu-latest)	54s
Build (5.1.x, macos-13, true)	4m 19s
Build (ocaml-base-compiler.4.14.2,system-msvc, windows-latest)	15m 28s
Build (ocaml-base-compiler.5.1.1,system-mingw, windows-latest)	9m 6s
Build (4.08.x, ubuntu-latest, true)	1m 9s
Build (4.04.x, ubuntu-latest, true, true)	4m 20s
Build (4.02.x, ubuntu-latest, true)	4m 6s
	1h 56m 10s

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