fix(pull_requests): add author_association to MinimalPullRequest#2369

Will-hxw wants to merge 1 commit intogithub:maingithub/github-mcp-server:mainfrom

Will-hxw:fix/2250-add-author-association-to-prWill-hxw/Will-hxw-github-mcp-server:fix/2250-add-author-association-to-prCopy head branch name to clipboard