fix(acvm): Mark outputs of Opcode::Call solvable #5520

Job	Run time
build-noir-wasm	3m 34s
build-acvm-js	1m 58s
build-nargo	2m 25s
build-noirc-abi	1m 42s
noir-js-backend-barretenberg	42s
noirc_abi	45s
ACVM JS (Browser)	1m 13s
ACVM JS (Node.js)	34s
Noir JS	1m 26s
noir_codegen	1m 4s
Integration Tests (Node)	4m 14s
noir_wasm	1m 4s
Integration Tests (Browser)	5m 31s
End	1s
	26m 13s

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