NodeJSEnv run does not fail if an ESModule fails

[gzm0]

How to reproduce in this repo: Change Script to ESModule in:

scala-js-js-envs/js-envs-test-kit/src/main/scala/org/scalajs/jsenv/test/kit/TestKit.scala

Line 161 in 01b0e95

List(Input.Script(p))

The test suite will now hang for NodeJSEnv.