Sort snapshot dropdown latest first (descending)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

whm/gniza-whm/restore.cgi

@@ -228,7 +228,7 @@ sub handle_step2 {
     print qq{  <label class="w-44 font-medium text-sm" for="timestamp">Snapshot</label>\n};
     if (@snapshots) {
         print qq{  <select class="select select-bordered select-sm w-full max-w-xs" id="timestamp" name="timestamp" required onchange="gnizaSnapshotChange()">\n};
-        for my $snap (reverse @snapshots) {
+        for my $snap (sort { $b cmp $a } @snapshots) {
             my $esc = GnizaWHM::UI::esc($snap);
             print qq{    <option value="$esc">$esc</option>\n};
         }