fix: reject VK with log_circuit_size=0 in UltraKeccak verifier#22319
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iakovenkos merged 2 commits intomerge-train/barretenbergfrom Apr 6, 2026
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Summary
Fixes a memory-safety vulnerability in the native UltraKeccak non-ZK verifier where a malformed verification key with
log_circuit_size = 0causes an out-of-bounds write inget_dyadic_powers_of_challenge.