* chore: upgrade forward compatible packages

* chore: v3.20.2...v3.24.0

* chore: silence string prototype extension deprecation

* refact: don't test clicking disabled button job-list

Recent test-helper upgrades will guard against clicking disabled buttons
as this is not something that real users can do. We need to change our
tests accordingly.

* fix: await async test helper `expectError`

We have to await this async test function otherwise the test's
rendering context will be torn down before we run assertions
against it.

* fix: don't try to click disabled two-step-button

Recent test-helper updates prohibit clicking disabled buttons. We need
to adapt the tests accordingly.

* fix: recommendation-accordion

Use up-to-date semantics for handling list-accordion closing
in recommendation-accordion.

* fixes toggling recommendation-accordion toggle.

* fix: simple-unless linting error application.hbs

There's no reason to use unless...