Refactor legacy code, fix LFS auth bypass, fix symlink bypass (#35708)#35716

wxiaoguang merged 1 commit intogo-gitea:release/v1.25go-gitea/gitea:release/v1.25from

GiteaBot:backport-35708-v1.25GiteaBot/gitea:backport-35708-v1.25Copy head branch name to clipboard