fix: correct span for prefix operator #10290

Job	Run time
build-acvm-js	1m 18s
build-nargo	2m 29s
build-noirc-abi	1m 39s
build-noir-wasm	3m 57s
ACVM JS (Node.js)	39s
ACVM JS (Browser)	1m 28s
noirc_abi	1m 20s
Noir JS	1m 11s
Example scripts	12s
noir_codegen	58s
Check external repo - zac-williamson/noir-edwards	6s
Integration Tests (Browser)	2m 15s
noir_wasm	1m 50s
Integration Tests (Node)	2m 9s
End	1s
	21m 32s

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