feat!: restrict noir word size to u32 #7669

Job	Run time
build-acvm-js	1m 20s
build-nargo	2m 26s
build-noirc-abi	2m 4s
build-noir-wasm	3m 49s
ACVM JS (Node.js)	42s
ACVM JS (Browser)	1m 22s
noirc_abi	1m 10s
noir-js-backend-barretenberg	42s
Example scripts	12s
Noir JS	1m 14s
noir_codegen	1m 2s
noir_wasm	1m 41s
Integration Tests (Node)	2m 15s
Integration Tests (Browser)	1m 51s
End	1s
	21m 51s

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