fix(ssa): Track RC instructions when removing last loads #16227

Job	Run time
build-nargo	2m 27s
yarn-lock	1m 8s
build-noirc-abi	1m 28s
build-acvm-js	1m 22s
build-noir-wasm	3m 42s
ACVM JS (Node.js)	41s
ACVM JS (Browser)	1m 23s
noirc_abi	1m 28s
noir_codegen	1m 7s
Noir JS	1m 0s
Example scripts	12s
Check external repo - noir-lang/ec	8s
Check external repo - noir-lang/eddsa	10s
Check external repo - noir-lang/mimc	5s
Check external repo - noir-lang/noir_sort	5s
Check external repo - noir-lang/noir-edwards	4s
Check external repo - noir-lang/noir-bignum	20s
Check external repo - noir-lang/noir_bigcurve	3m 49s
Check external repo - noir-lang/noir_base64	9s
Check external repo - noir-lang/noir_string_search	9s
Check external repo - noir-lang/sparse_array	9s
Check external repo - noir-lang/noir_rsa	5s
Check external repo - AztecProtocol/aztec-packages	33s
Check external repo - AztecProtocol/aztec-packages	25s
Check external repo - AztecProtocol/aztec-packages	9s
Check external repo - AztecProtocol/aztec-packages	3m 43s
Check external repo - AztecProtocol/aztec-packages	16s
Check external repo - AztecProtocol/aztec-packages	2m 30s
Check external repo - AztecProtocol/aztec-packages	48s
noir_wasm	1m 29s
Integration Tests (Browser)	2m 11s
Integration Tests (Node)	2m 28s
End	1s
	35m 44s

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