fix: iterative unification #15997

Job	Run time
build-acvm-js	1m 26s
build-nargo	2m 20s
build-noirc-abi	1m 25s
build-noir-wasm	3m 54s
noirc_abi	1m 41s
ACVM JS (Node.js)	42s
ACVM JS (Browser)	1m 37s
Example scripts	16s
Noir JS	1m 6s
noir_codegen	1m 7s
Check external repo - ${{ matrix.project.repo }}	0s
Integration Tests (Browser)	2m 13s
Integration Tests (Node)	2m 32s
noir_wasm	2m 9s
End	1s
	22m 29s

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