Backport #36465 by @lunny
When checking whether a user can update a pull request branch or perform
an update via rebase, a maintainer should inherit the pull request
author’s permissions if Allow maintainer edits is enabled.
Signed-off-by: Lunny Xiao <xiaolunwen@gmail.com>
Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
