Hermes should panic on overflow

[romac]

Summary

Overflow often are a symptom of a logic error, and while they raise panics in debug mode (ie. in tests), they may still occur in release mode (ie. in production) and silently lead to incorrect and hard to debug behavior.

We should therefore enable overflow checks in release mode to have the relayer panic on overflows, so that we may then fix the logic bug behind it.

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