fix: backport various fixes (#39203, #39236, #39239, #39248, #39251) (#39252)

templates/admin/packages/list.tmpl

@@ -55,10 +55,12 @@
 						<tr>
 							<td>{{.Version.ID}}</td>
 							<td>
+							{{if .Owner}}
 								<a href="{{.Owner.HomeLink}}">{{.Owner.Name}}</a>
 								{{if .Owner.Visibility.IsPrivate}}
 									<span class="tw-text-gold">{{svg "octicon-lock"}}</span>
 								{{end}}
+							{{end}}
 							</td>
 							<td>{{.Package.Type.Name}}</td>
 							<td class="gt-ellipsis tw-max-w-48">{{.Package.Name}}</td>