chore: handle constant output for ec add opcode #17460

Job	Run time
changes	8s
setup / start-builder	2m 6s
build-images	2s
acir-bench	0s
bb-native-tests	6m 57s
bb-gcc	2m 5s
bb-js-test	1m 50s
build	0s
noir-format	0s
noir-build-acir-tests	4m 2s
noir-examples	4m 23s
noir-test	0s
avm-format	0s
bb-bench	7m 57s
noir-packages-test	10m 21s
l1-contracts-test	0s
docs-preview	0s
protocol-circuits-gates-report	11m 6s
bench-e2e	0s
e2e	0s
noir-projects	0s
yarn-project-formatting	0s
yarn-project-test	0s
boxes	0s
prover-client-test	0s
bench-summary	0s
boxes-test	0s
bb-acir-tests-sol-honk	2m 46s
bb-acir-tests-bb-js	5m 21s
bb-acir-tests-sol	2m 34s
bb-acir-tests-bb	15m 42s
rerun-check	1s
merge-check	1s
notify	0s
	1h 17m 22s

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