Fix empty lines in adminwho with stealthmins. (#34122)

Don't print newline if admin is hidden.

Content.Server/Administration/Commands/AdminWhoCommand.cs

@@ -33,16 +33,16 @@ public sealed class AdminWhoCommand : IConsoleCommand
         var first = true;
         foreach (var admin in adminMgr.ActiveAdmins)
         {
-            if (!first)
-                sb.Append('\n');
-            first = false;
-
             var adminData = adminMgr.GetAdminData(admin)!;
             DebugTools.AssertNotNull(adminData);
 
             if (adminData.Stealth && !seeStealth)
                 continue;
 
+            if (!first)
+                sb.Append('\n');
+            first = false;
+
             sb.Append(admin.Name);
             if (adminData.Title is { } title)
                 sb.Append($": [{title}]");