fix(ssa): Fix slice intrinsic handling in the capacity tracker #5235

Job	Run time
build-noir-wasm	3m 57s
build-acvm-js	2m 41s
build-noirc-abi	2m 24s
build-nargo	2m 27s
noir-js-backend-barretenberg	50s
noirc_abi	50s
ACVM JS (Node.js)	47s
ACVM JS (Browser)	2m 52s
Noir JS	1m 35s
noir_codegen	1m 2s
noir_wasm	1m 11s
Integration Tests (Browser)	5m 29s
Integration Tests (Node)	3m 35s
End	1s
	29m 41s

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