fix: Pass radix directly to the blackbox #13419

Job	Run time
build-nargo	2m 56s
build-noirc-abi	1m 28s
build-acvm-js	1m 21s
build-noir-wasm	4m 21s
ACVM JS (Node.js)	33s
ACVM JS (Browser)	1m 37s
noirc_abi	1m 14s
Example scripts	13s
noir_codegen	1m 0s
Noir JS	1m 33s
Check external repo - ${{ matrix.project.repo }}	0s
noir_wasm	2m 37s
Integration Tests (Node)	2m 30s
Integration Tests (Browser)	2m 0s
End	1s
	23m 24s

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