Fix 404 when deleting Docker package with an internal version (#27615) (#27629)

Backport #27615 by @lng2020

close #27601
The Docker registry has an internal version, which leads to 404

Co-authored-by: Nanguan Lin <70063547+lng2020@users.noreply.github.com>

routers/web/user/package.go

@@ -422,7 +422,7 @@ func PackageSettingsPost(ctx *context.Context) {
 
 		redirectURL := ctx.Package.Owner.HomeLink() + "/-/packages"
 		// redirect to the package if there are still versions available
-		if has, _ := packages_model.ExistVersion(ctx, &packages_model.PackageSearchOptions{PackageID: ctx.Package.Descriptor.Package.ID}); has {
+		if has, _ := packages_model.ExistVersion(ctx, &packages_model.PackageSearchOptions{PackageID: ctx.Package.Descriptor.Package.ID, IsInternal: util.OptionalBoolFalse}); has {
 			redirectURL = ctx.Package.Descriptor.PackageWebLink()
 		}