FFI: Errors cannot be thrown after a `nonblocking` function call

[rojvv]

call_some_nonblocking_function();
console.debug("Reaches here.");
throw new Error(); // not thrown

[rojvv]

Full reproduction example: https://github.com/roj1512/deno-18131-reproduction

[aapoalas]

This seems to be essentially the same issue as https://github.com/denoland/deno/issues/14333 just with different API triggering the behaviour.