[BUGFIX release-1-13] Updated backburner.js. Backported from master.

[workmanw]

Addresses #12193 and possibly #10479.

[workmanw]

:( It's not clear what failed.

One error was:

TypeError: Cannot read property 'QUnit' of undefined

Seems like something else going on there.

Second error was timeouts:

Maybe it just needs a kick 👞

[rwjblue]

Nah, it's failing upstream. I just fixed node tests on master yesterday. I need to backport that fix to beta, release, and release-1-13.

[workmanw]

@rwjblue Okay cool. Will rebase this when the other fix(es) have been backported.

[workmanw]

@rwjblue Actually, I'd be happy to open PRs to backport those fixes across those branches if you think it's straightforward (I don't have any specific knowledge of the fixes).

[rwjblue]

#12440

[rwjblue]

Can you rebase?

[workmanw]

@rwjblue Rebased.

[rwjblue]

Thank you!

[workmanw]

You're welcome!

I'd be happy to back port these node test fixes to beta and release. I'll do that right meow. 😸

One question, I'll be looking to use https://github.com/components/ember/tree/release-1-13. Does that just push automagically?