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b8a6bfa22c
Adds support for value terminals (optional/logical/ternary/sequence) within try/catch clauses. Try/catch expressions insert maybe-throw terminals after each instruction, but BuildReactiveFunction's value block extraction was not expecting these terminals. The fix is to roughly treat maybe-throw similarly to goto, falling through to the continuation block, but there are a few edge cases to handle. I've also added extensive tests, including testing that errors correctly flow to the catch handler.