feat: Avoid incrementing reference counts in some cases #15478

Job	Run time
build-nargo	2m 23s
build-acvm-js	1m 26s
build-noirc-abi	1m 36s
build-noir-wasm	3m 40s
ACVM JS (Node.js)	43s
ACVM JS (Browser)	1m 20s
noirc_abi	1m 20s
Example scripts	11s
noir_codegen	1m 4s
Noir JS	1m 3s
Check external repo - ${{ matrix.project.repo }}	0s
noir_wasm	1m 45s
Integration Tests (Node)	2m 28s
Integration Tests (Browser)	1m 59s
End	1s
	20m 59s

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