Describe the bug

If the action is executed in a job that doesn't have an attached PR (e.g. one that's triggered on GitHub releases), then the action will fail with

...
Run # Post output.
gh: Not Found (HTTP 404)
Error: Process completed with exit code 1.

This is not particularly descriptive error (it doesn't say what it tried to do when it got a 404), but I believe it's caused by this line being executed:

  # Check if the PR contains a bot comment with the same identifier.
  list_comments=$(gh api /repos/foobar/my-repo/issues/0/comments --header "$GH_API" --method GET --paginate)

As you can see, it's trying to fetch comments for issue "0", which is likely where the 404 error comes from.

I believe this problem was introduced in #503, since it moved the list_comments=... line out of the if [[ "$create_comment" == "true" && "${{ steps.identifier.outputs.pr }}" != "0" ]]; then gate that it used to be behind.

To Reproduce

Run a workflow triggered on e.g.

on:
  release:
    types: [published]

Call the action there.

Expected behavior

The action should not attempt to read comments from issue 0.

Screenshots