fix: correct span for prefix operator (#5624) #10304

Job	Run time
build-nargo	2m 32s
build-noirc-abi	1m 56s
build-acvm-js	1m 29s
build-noir-wasm	3m 52s
ACVM JS (Browser)	1m 17s
ACVM JS (Node.js)	41s
noirc_abi	1m 10s
Noir JS	1m 10s
noir_codegen	1m 1s
Check external repo - zac-williamson/noir-edwards	12s
Example scripts	18s
Integration Tests (Node)	2m 8s
Integration Tests (Browser)	2m 13s
noir_wasm	2m 4s
End	1s
	22m 4s

Provide feedback