To ease oncall burden for the docathon PR reviewers and ensure all PRs are correctly labeled, adding this GH action that will look for the issue number in the PR and if that issue has a docathon-h1-2024 label, then it would propagate the labels from the issues into the PR. It should not conflict with the existing labelers because we use ``pull_request.add_to_labels`` - credit @kit1980.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/127569
Approved by: https://github.com/kit1980
