handleIterEvents goroutines not being cleared up

[ankur22]

Brief summary

While creating a new e2e test in a PR to upgrade k6 with the tagged version of xk6-browser, I found that the test would fail due to an error explained in one of the comments.

Basically the channel isn't being closed here, which is preventing the goroutine from exiting and being cleared away when the test run completes. This will result in a leaked goroutine if the k6 process itself doesn't then shut down.

Once the fix is in place, we need to remember to add the e2e test back in k6.

xk6-browser version

v1.0.0

OS

NA

Chrome version

NA

Docker version and image (if applicable)

NA

Steps to reproduce the problem

The steps are outlined in the comment here.

Expected behaviour

The test passes or fails without the found unexpected goroutines error.

Actual behaviour

The test fails with found unexpected goroutines.