PR comment behavior

[janniclas]

Hi,
I'm currently running v5.0.0-a02 with the comment and update comment feature.
Everything works as expected if executed on a PR. However, I have the same workflow for both PRs and push events on e.g. the main branch.
On push it looks like the action tries to find and update a PR comment (which doesn't exist as the workflow was triggered by a push event). This causes the whole pipeline to fail.
I'd expect the pipeline not to fail even if it might be unusual to execute this specific action on push instead of only for PRs. However, I don't think it is to unusual to have a common workflow for push events and PRs.