chore: remove some `_else_condition` tech debt #15230

Job	Run time
build-nargo	2m 24s
build-acvm-js	1m 22s
build-noir-wasm	3m 50s
build-noirc-abi	1m 34s
ACVM JS (Browser)	1m 33s
ACVM JS (Node.js)	37s
noirc_abi	1m 16s
Example scripts	22s
noir_codegen	1m 11s
Noir JS	1m 6s
Check external repo - ${{ matrix.project.repo }}	0s
noir_wasm	1m 34s
Integration Tests (Browser)	2m 14s
Integration Tests (Node)	2m 19s
End	1s
	21m 23s

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