Use zero instead of 9999-12-31 for deadline
Fix#32291
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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>
Only move code, no unnecessary logic change. (There are many problems in
old code, but changing them is not in this PR's scope)
Co-authored-by: Giteabot <teabot@gitea.io>