feat: improve SSA type-awareness in EQ and MUL instructions #5421

Job	Run time
build-acvm-js	3m 12s
build-nargo	2m 25s
build-noirc-abi	2m 40s
build-noir-wasm	3m 37s
noirc_abi	1m 1s
noir-js-backend-barretenberg	47s
ACVM JS (Browser)	1m 24s
noir_codegen	1m 10s
ACVM JS (Node.js)	37s
Noir JS	1m 28s
Integration Tests (Browser)	5m 34s
noir_wasm	1m 10s
Integration Tests (Node)	3m 33s
End	1s
	28m 39s

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