Add publish button test to Jest test suite

[mikemando]

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Thanks!

[gitpod-io]

[TildaDares]

Hi @mikemando, we're currently working on converting jasmine tests to jest and the conversion is a bit tricky. @NARUDESIGNS has resolved this issue in #785. You did a great job and we appreciate the time you spent working on this PR. If you'd like to work on another issue, leave a comment here and I'll find another one for you. Thank you!