fix incorrect repo url when changed the case of ownername (#25733) (#25881)
Backport #25733 by @hiifong
When only the casing of the username changes, update the owner name of the repo,
and keep the original logic consistent with other conditions.
example: assume your username is `gitea`, lowercase username is `gitea` too,
repo URL is `.../gitea/{repo}`.
You change your username to `Gitea`, `GiTea` or something like that,
as long as the lowercase username is still `gitea`, the repo URL remained `.../gitea/{repo}`.
this pr keeps the new username consistent with the repo URL.
Before:
After:
Co-authored-by: hiifong <i@hiif.ong>
de8127e78b