Show lock owner instead of repo owner on LFS setting page (#31788)

Fix #31784.

Before:

<img width="1648" alt="image"
src="https://github.com/user-attachments/assets/03f32545-4a85-42ed-bafc-2b193a5d8023">

After:

<img width="1653" alt="image"
src="https://github.com/user-attachments/assets/e5bcaf93-49cb-421f-aac1-5122bc488b02">

templates/repo/settings/lfs_locks.tmpl

@@ -30,9 +30,9 @@
 								{{end}}
 							</td>
 							<td>
-								<a href="{{$.Owner.HomeLink}}">
-									{{ctx.AvatarUtils.Avatar $.Owner}}
-									{{$.Owner.DisplayName}}
+								<a href="{{$lock.Owner.HomeLink}}">
+									{{ctx.AvatarUtils.Avatar $lock.Owner}}
+									{{$lock.Owner.DisplayName}}
 								</a>
 							</td>
 							<td>{{TimeSince .Created ctx.Locale}}</td>