Check the result of the function in `check_determinism` about madsim

[wangrunji0408]

Thanks for sharing your idea!

Besides checking for determinism, we also want to locate the source as soon as possible when uncertainty occurs. Therefore, check_determinism records the entire sequence of random states, and it immediately panics if it finds inconsistencies during the second run. This allows developers to roughly locate the uncertainty source through the backtrace. In comparison, only comparing function return values might miss some cases and doesn't quickly reveal problems. Moreover, this method won't work if the user's function does not return a random number, which I believe is more common in practice.

However, it would be nice to add return value check to the current check_determinism.