cranelift: Prevent overflow errors in interpreter for add,sub,mul - #3043
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Hey,
In #3038 we had to disable all overflow checks in order for the fuzzer to work.
This PR performs the correct operations (which don't cause overflows) in the interpreter so that we can keep working on the fuzzer without special settings.
I expect us to keep improving the implementation of the interpreter as we move the fuzzer along, and this is a first step of that.