chore: update error conversion traits to act on references #6455

Job	Run time
build-acvm-js	1m 25s
build-nargo	2m 33s
build-noir-wasm	3m 44s
build-noirc-abi	2m 3s
ACVM JS (Node.js)	42s
ACVM JS (Browser)	1m 12s
noirc_abi	1m 18s
noir-js-backend-barretenberg	43s
noir_codegen	1m 8s
Noir JS	1m 44s
Integration Tests (Node)	3m 40s
Integration Tests (Browser)	5m 39s
noir_wasm	2m 2s
End	1s
	27m 54s

Provide feedback