Fix WasmJS Promise.await() never resumes if promise rejected from JS with non-Kotlin exception

[shepeliev]

No description provided.

[dkhalanskyjb]

Ok, thanks, looks good. Could you base the PR on top of develop instead of master (see https://github.com/Kotlin/kotlinx.coroutines/blob/master/CONTRIBUTING.md) and also port this fix to kotlinx-coroutines-core/js/, where this issue also exists?

[shepeliev]

It seems that the behavior of evaluating JS exceptions has changed since Kotlin 2.0.0 was released. So the WasmJS doesn't have this issue anymore. When a promise rejects with a non-Kotlin exception, await resumes with a JsException without getting stuck.

On the other hand, JS target really still has the issue. I've added a couple of tests, ported the solution to JS target and reverted the changes to WasmJS Promise.await() since it now appears to work as expected.

[dkhalanskyjb]

Good job, thanks!