Revert "Revert "fix some bugs in new workflow""

[rachmari]

Why:

The pull request event will run for each new push to the branch, so the push event is not necessary. I've removed the push event and the step that retrieved the pull number when the triggering event was a push.

When the check to dismiss a review runs and there are no prior reviews by github-actions[bot], the check fails in the fromJSON conditional check: https://github.com/github/docs/pull/2062/checks?check_run_id=1548110821

• The fix is to check that a review result actually exists before getting the properties of the object.

I also added a bit more logging for the future just so we have some basic info.

Check off the following:

• All of the tests are passing.

[github-actions]

👋 Hey there spelunker. It looks like you've modified some files that we can't accept as contributions.

• .github/workflows/triage-unallowed-contributions.yml

You'll need to revert all of these ☝️ files using GitHub Desktop or git checkout origin/main <file name>. Once you get those files reverted, we can continue with the review process.

Editing the workflow file

[github-actions]

👋 Hey there spelunker. It looks like you've modified some files that we can't accept as contributions.

• .github/workflows/triage-unallowed-contributions.yml

You'll need to revert all of these ☝️ files using GitHub Desktop or git checkout origin/main <file name>. Once you get those files reverted, we can continue with the review process.

Catches the things it needs to catch.

[github-actions]

👋 Hey there spelunker. It looks like you've modified some files that we can't accept as contributions.

• .github/workflows/triage-unallowed-contributions.yml

You'll need to revert all of these ☝️ files using GitHub Desktop or git checkout origin/main <file name>. Once you get those files reverted, we can continue with the review process.