Integers gets resolved to double after passing in double once

[Teja-Paidimarry]

Reproducible test here

Steps to reproduce:

1. Create a async function and pass an integer to it and assert that the return value is an integer.
2. Pass a double and assert that the return value is a double.
3. Pass a integer value and assert that the return value is an integer.

Right now, step (3) fails and returns an double.

Note: This only happens when we use an async function. Synchronous function do seem to work fine 👍

[woess]

We don't guarantee that integers will stay integers. Please don't rely on a particular numeric type. I suggest to expect a Number instead and use Number.intValue()/doubleValue() to convert. If you use the polyglot Value API, there's Value.fitsInInt() and Value.asInt()/asDouble() for that purpose. You can also use IntConsumer or DoubleConsumer to force automatic conversion.